USA: Illinois
Counties
The population of all counties in the State of Illinois according to census results and latest official estimates.
| Name | Status | Population Census 2000-04-01 | Population Census 2010-04-01 | Population Estimate 2018-07-01 | |
|---|---|---|---|---|---|
| Adams | County | 68,261 | 67,103 | 65,691 | → |
| Alexander | County | 9,583 | 8,238 | 6,060 | → |
| Bond | County | 17,636 | 17,768 | 16,630 | → |
| Boone | County | 41,788 | 54,167 | 53,577 | → |
| Brown | County | 6,952 | 6,937 | 6,556 | → |
| Bureau | County | 35,496 | 34,978 | 32,993 | → |
| Calhoun | County | 5,079 | 5,089 | 4,802 | → |
| Carroll | County | 16,671 | 15,388 | 14,312 | → |
| Cass | County | 13,691 | 13,638 | 12,260 | → |
| Champaign | County | 179,687 | 201,081 | 209,983 | → |
| Christian | County | 35,380 | 34,800 | 32,661 | → |
| Clark | County | 16,995 | 16,335 | 15,596 | → |
| Clay | County | 14,417 | 13,815 | 13,253 | → |
| Clinton | County | 35,536 | 37,762 | 37,639 | → |
| Coles | County | 53,210 | 53,873 | 50,885 | → |
| Cook | County | 5,376,741 | 5,195,075 | 5,180,493 | → |
| Crawford | County | 20,460 | 19,817 | 18,807 | → |
| Cumberland | County | 11,311 | 11,048 | 10,808 | → |
| De Witt (DeWitt) | County | 16,802 | 16,561 | 15,769 | → |
| DeKalb | County | 88,941 | 105,160 | 104,143 | → |
| Douglas | County | 19,909 | 19,982 | 19,479 | → |
| DuPage | County | 904,594 | 916,889 | 928,589 | → |
| Edgar | County | 19,643 | 18,576 | 17,360 | → |
| Edwards | County | 6,978 | 6,721 | 6,392 | → |
| Effingham | County | 34,267 | 34,242 | 34,208 | → |
| Fayette | County | 21,810 | 22,142 | 21,416 | → |
| Ford | County | 14,227 | 14,081 | 13,264 | → |
| Franklin | County | 39,021 | 39,989 | 38,701 | → |
| Fulton | County | 38,244 | 37,069 | 34,844 | → |
| Gallatin | County | 6,426 | 5,589 | 5,058 | → |
| Greene | County | 14,766 | 13,886 | 13,044 | → |
| Grundy | County | 37,528 | 50,063 | 50,972 | → |
| Hamilton | County | 8,613 | 8,457 | 8,163 | → |
| Hancock | County | 20,171 | 19,104 | 17,844 | → |
| Hardin | County | 4,793 | 4,320 | 3,910 | → |
| Henderson | County | 8,176 | 7,328 | 6,709 | → |
| Henry | County | 51,032 | 50,485 | 49,090 | → |
| Iroquois | County | 31,340 | 29,718 | 27,604 | → |
| Jackson | County | 59,607 | 60,218 | 57,419 | → |
| Jasper | County | 10,113 | 9,698 | 9,611 | → |
| Jefferson | County | 40,051 | 38,825 | 37,820 | → |
| Jersey | County | 21,649 | 22,985 | 21,847 | → |
| Jo Daviess | County | 22,296 | 22,677 | 21,366 | → |
| Johnson | County | 12,877 | 12,582 | 12,456 | → |
| Kane | County | 404,508 | 515,258 | 534,216 | → |
| Kankakee | County | 103,825 | 113,449 | 110,024 | → |
| Kendall | County | 54,539 | 114,792 | 127,915 | → |
| Knox | County | 55,842 | 52,919 | 50,112 | → |
| La Salle | County | 111,599 | 113,915 | 109,430 | → |
| Lake | County | 644,682 | 703,404 | 700,832 | → |
| Lawrence | County | 15,449 | 16,903 | 15,765 | → |
| Lee | County | 36,062 | 36,031 | 34,223 | → |
| Livingston | County | 39,734 | 38,950 | 35,761 | → |
| Logan | County | 31,199 | 30,305 | 28,925 | → |
| Macon | County | 114,690 | 110,768 | 104,712 | → |
| Macoupin | County | 49,008 | 47,765 | 45,313 | → |
| Madison | County | 259,019 | 269,328 | 264,461 | → |
| Marion | County | 41,678 | 39,437 | 37,620 | → |
| Marshall | County | 13,159 | 12,640 | 11,534 | → |
| Mason | County | 16,034 | 14,666 | 13,565 | → |
| Massac | County | 15,163 | 15,429 | 14,080 | → |
| McDonough | County | 32,906 | 32,612 | 29,955 | → |
| McHenry | County | 259,524 | 308,820 | 308,570 | → |
| McLean | County | 150,384 | 169,572 | 172,828 | → |
| Menard | County | 12,483 | 12,705 | 12,288 | → |
| Mercer | County | 16,940 | 16,434 | 15,601 | → |
| Monroe | County | 27,625 | 32,957 | 34,335 | → |
| Montgomery | County | 30,646 | 30,104 | 28,601 | → |
| Morgan | County | 36,627 | 35,551 | 33,976 | → |
| Moultrie | County | 14,288 | 14,846 | 14,717 | → |
| Ogle | County | 51,001 | 53,497 | 50,923 | → |
| Peoria | County | 183,466 | 186,494 | 180,621 | → |
| Perry | County | 23,091 | 22,350 | 21,174 | → |
| Piatt | County | 16,385 | 16,727 | 16,396 | → |
| Pike | County | 17,362 | 16,430 | 15,611 | → |
| Pope | County | 4,397 | 4,470 | 4,212 | → |
| Pulaski | County | 7,333 | 6,161 | 5,463 | → |
| Putnam | County | 6,077 | 6,006 | 5,740 | → |
| Randolph | County | 33,897 | 33,476 | 32,106 | → |
| Richland | County | 16,291 | 16,233 | 15,763 | → |
| Rock Island | County | 149,390 | 147,546 | 143,477 | → |
| Saline | County | 26,752 | 24,913 | 23,906 | → |
| Sangamon | County | 188,974 | 197,465 | 195,348 | → |
| Schuyler | County | 7,181 | 7,544 | 6,907 | → |
| Scott | County | 5,539 | 5,355 | 4,926 | → |
| Shelby | County | 22,884 | 22,363 | 21,741 | → |
| St. Clair | County | 256,043 | 270,063 | 261,059 | → |
| Stark | County | 6,330 | 5,994 | 5,427 | → |
| Stephenson | County | 48,995 | 47,711 | 44,753 | → |
| Tazewell | County | 128,465 | 135,394 | 132,328 | → |
| Union | County | 18,311 | 17,808 | 16,841 | → |
| Vermilion | County | 83,929 | 81,625 | 76,806 | → |
| Wabash | County | 12,932 | 11,947 | 11,549 | → |
| Warren | County | 18,736 | 17,710 | 17,032 | → |
| Washington | County | 15,150 | 14,716 | 13,995 | → |
| Wayne | County | 17,149 | 16,760 | 16,332 | → |
| White | County | 15,381 | 14,665 | 13,665 | → |
| Whiteside | County | 60,662 | 58,498 | 55,626 | → |
| Will | County | 502,211 | 677,544 | 692,310 | → |
| Williamson | County | 61,300 | 66,362 | 67,056 | → |
| Winnebago | County | 278,441 | 295,264 | 284,081 | → |
| Woodford | County | 35,491 | 38,664 | 38,463 | → |
| Illinois | State | 12,419,927 | 12,831,574 | 12,741,080 |
Contents: Incorporated Places
The population of all incorporated places in the State of Illinois according to census results and latest official estimates.
| Name | Status | County | Population Census 2000-04-01 | Population Census 2010-04-01 | Population Estimate 2018-07-01 | |
|---|---|---|---|---|---|---|
| Abingdon | City | Knox | 3,567 | 3,286 | 3,088 | → |
| Addieville | Village | Washington | 267 | 252 | 241 | → |
| Addison | Village | DuPage | 36,084 | 37,062 | 36,724 | → |
| Adeline | Village | Ogle | 139 | 85 | 80 | → |
| Albany | Village | Whiteside | 896 | 903 | 872 | → |
| Albers | Village | Clinton | 896 | 1,183 | 1,145 | → |
| Albion | City | Edwards | 2,022 | 1,993 | 1,889 | → |
| Aledo | City | Mercer | 3,624 | 3,648 | 3,469 | → |
| Alexis | Village | Warren / Mercer | 875 | 831 | 790 | → |
| Algonquin | Village | Kane / McHenry | 23,452 | 30,061 | 30,910 | → |
| Alhambra | Village | Madison | 639 | 681 | 655 | → |
| Allendale | Village | Wabash | 519 | 475 | 463 | → |
| Allenville | Village | Moultrie | 154 | 150 | 142 | → |
| Allerton | Village | Vermilion / Champaign | 292 | 288 | 270 | → |
| Alma | Village | Marion | 385 | 320 | 306 | → |
| Alorton | Village | St. Clair | 2,664 | 2,034 | 1,928 | → |
| Alpha | Village | Henry | 725 | 669 | 641 | → |
| Alsey | Village | Scott | 243 | 227 | 209 | → |
| Alsip | Village | Cook | 19,657 | 19,271 | 18,880 | → |
| Altamont | City | Effingham | 2,319 | 2,322 | 2,283 | → |
| Alto Pass | Village | Union | 392 | 387 | 368 | → |
| Alton | City | Madison | 30,332 | 27,948 | 26,528 | → |
| Altona | Village | Knox | 554 | 529 | 501 | → |
| Alvan | Village | Vermilion | 313 | 270 | 255 | → |
| Amboy | City | Lee | 2,637 | 2,500 | 2,322 | → |
| Anchor | Village | McLean | 166 | 146 | 141 | → |
| Andalusia | Village | Rock Island | 1,144 | 1,176 | 1,167 | → |
| Andover | Village | Henry | 593 | 578 | 573 | → |
| Anna | City | Union | 5,202 | 4,444 | 4,143 | → |
| Annawan | Town | Henry / Bureau | 859 | 887 | 857 | → |
| Antioch | Village | Lake | 8,793 | 14,485 | 14,258 | → |
| Apple River | Village | Jo Daviess | 384 | 365 | 347 | → |
| Arcola | City | Douglas | 2,838 | 2,914 | 2,840 | → |
| Arenzville | Village | Cass | 415 | 409 | 370 | → |
| Argenta | Village | Macon | 948 | 939 | 882 | → |
| Arlington | Village | Bureau | 210 | 193 | 182 | → |
| Arlington Heights | Village | Lake / Cook | 76,624 | 75,187 | 75,249 | → |
| Armington | Village | Tazewell | 369 | 343 | 320 | → |
| Aroma Park | Village | Kankakee | 770 | 741 | 692 | → |
| Arrowsmith | Village | McLean | 294 | 289 | 278 | → |
| Arthur | Village | Moultrie / Douglas | 2,216 | 2,288 | 2,227 | → |
| Ashkum | Village | Iroquois | 717 | 764 | 708 | → |
| Ashland | Village | Cass | 1,361 | 1,336 | 1,197 | → |
| Ashley | City | Washington | 625 | 536 | 493 | → |
| Ashmore | Village | Coles | 811 | 785 | 752 | → |
| Ashton | Village | Lee | 1,122 | 972 | 895 | → |
| Assumption | City | Christian | 1,256 | 1,174 | 1,082 | → |
| Astoria | Town | Fulton | 1,174 | 1,141 | 1,058 | → |
| Athens | City | Menard | 1,736 | 1,988 | 1,921 | → |
| Atkinson | Town | Henry | 994 | 989 | 967 | → |
| Atlanta | City | Logan | 1,656 | 1,691 | 1,619 | → |
| Atwood | Village | Piatt / Douglas | 1,316 | 1,221 | 1,168 | → |
| Auburn | City | Sangamon | 4,461 | 4,812 | 4,681 | → |
| Augusta | Village | Hancock | 679 | 587 | 548 | → |
| Aurora | City | Kendall / DuPage / Kane / Will | 143,002 | 197,914 | 199,602 | → |
| Ava | City | Jackson | 663 | 654 | 618 | → |
| Aviston | Village | Clinton | 1,242 | 1,951 | 2,110 | → |
| Avon | Village | Fulton / Warren | 945 | 799 | 729 | → |
| Baldwin | Village | Randolph | 435 | 373 | 347 | → |
| Banner | Village | Fulton | 215 | 189 | 183 | → |
| Bannockburn | Village | Lake | 1,438 | 1,583 | 1,602 | → |
| Bardolph | Village | McDonough | 279 | 251 | 234 | → |
| Barrington | Village | Lake / Cook | 10,132 | 10,314 | 10,274 | → |
| Barrington Hills | Village | Lake / Cook / Kane / McHenry | 3,943 | 4,223 | 4,207 | → |
| Barry | City | Pike | 1,411 | 1,318 | 1,252 | → |
| Bartelso | Village | Clinton | 590 | 602 | 612 | → |
| Bartlett | Village | Cook / DuPage / Kane | 36,560 | 41,152 | 40,931 | → |
| Bartonville | Village | Peoria | 6,322 | 6,474 | 6,172 | → |
| Basco | Village | Hancock | 97 | 98 | 90 | → |
| Batavia | City | DuPage / Kane | 23,839 | 26,180 | 26,316 | → |
| Batchtown | Village | Calhoun | 224 | 214 | 201 | → |
| Bath | Village | Mason | 342 | 333 | 311 | → |
| Bay View Gardens | Village | Woodford | 377 | 380 | 403 | → |
| Baylis | Village | Pike | 269 | 205 | 197 | → |
| Beach Park | Village | Lake | 10,421 | 13,674 | 13,867 | → |
| Beardstown | City | Cass | 5,807 | 6,165 | 5,502 | → |
| Beaverville | Village | Iroquois | 394 | 362 | 337 | → |
| Beckemeyer | Village | Clinton | 1,075 | 1,040 | 1,015 | → |
| Bedford Park | Village | Cook | 561 | 589 | 601 | → |
| Beecher | Village | Will | 2,205 | 4,359 | 4,460 | → |
| Beecher City | Village | Effingham | 493 | 461 | 457 | → |
| Belgium | Village | Vermilion | 455 | 396 | 369 | → |
| Belknap | Village | Johnson | 133 | 104 | 105 | → |
| Belle Prairie City | Town | Hamilton | 60 | 52 | 50 | → |
| Belle Rive | Village | Jefferson | 364 | 361 | 350 | → |
| Belleville | City | St. Clair | 42,183 | 44,296 | 41,290 | → |
| Bellevue | Village | Peoria | 1,839 | 2,001 | 1,945 | → |
| Bellflower | Village | McLean | 393 | 360 | 351 | → |
| Bellmont | Village | Wabash | 296 | 276 | 270 | → |
| Bellwood | Village | Cook | 20,535 | 19,055 | 18,839 | → |
| Belvidere | City | Boone | 20,885 | 25,644 | 25,194 | → |
| Bement | Village | Piatt | 1,748 | 1,728 | 1,681 | → |
| Benld | City | Macoupin | 1,547 | 1,556 | 1,440 | → |
| Bensenville | Village | Cook / DuPage | 20,505 | 18,352 | 18,226 | → |
| Benson | Village | Woodford | 409 | 434 | 411 | → |
| Bentley | Town | Hancock | 46 | 35 | 33 | → |
| Benton | City | Franklin | 6,947 | 7,079 | 6,913 | → |
| Berkeley | Village | Cook | 5,242 | 5,207 | 5,073 | → |
| Berlin | Village | Sangamon | 154 | 180 | 176 | → |
| Berwyn | City | Cook | 54,030 | 56,653 | 54,917 | → |
| Bethalto | Village | Madison | 9,517 | 9,524 | 9,298 | → |
| Bethany | Village | Moultrie | 1,308 | 1,354 | 1,268 | → |
| Big Rock | Village | Kane | 1,184 | 1,132 | 1,142 | → |
| Biggsville | Village | Henderson | 344 | 304 | 272 | → |
| Bingham | Village | Fayette | 114 | 83 | 80 | → |
| Bishop Hill | Village | Henry | 130 | 128 | 122 | → |
| Bismarck | Village | Vermilion | 572 | 579 | 539 | → |
| Blandinsville | Village | McDonough | 781 | 651 | 603 | → |
| Bloomingdale | Village | DuPage | 21,658 | 22,052 | 21,894 | → |
| Bloomington | City | McLean | 65,540 | 76,701 | 77,962 | → |
| Blue Island | City | Cook | 23,510 | 23,701 | 23,112 | → |
| Blue Mound | Village | Macon | 1,132 | 1,156 | 1,082 | → |
| Bluffs | Village | Scott | 761 | 715 | 656 | → |
| Bluford | Village | Jefferson | 796 | 686 | 661 | → |
| Bolingbrook | Village | DuPage / Will | 56,396 | 73,365 | 75,178 | → |
| Bondville | Village | Champaign | 497 | 456 | 451 | → |
| Bone Gap | Village | Edwards | 272 | 246 | 234 | → |
| Bonfield | Village | Kankakee | 389 | 382 | 358 | → |
| Bonnie | Village | Jefferson | 381 | 397 | 383 | → |
| Bourbonnais | Village | Kankakee | 15,350 | 18,689 | 19,485 | → |
| Bowen | Village | Hancock | 541 | 494 | 460 | → |
| Braceville | Village | Grundy / Will | 790 | 793 | 760 | → |
| Bradford | Village | Stark | 781 | 768 | 694 | → |
| Bradley | Village | Kankakee | 12,945 | 15,870 | 15,277 | → |
| Braidwood | City | Will | 5,276 | 6,225 | 6,203 | → |
| Breese | City | Clinton | 4,060 | 4,442 | 4,493 | → |
| Bridgeport | City | Lawrence | 2,094 | 1,886 | 1,701 | → |
| Bridgeview | Village | Cook | 15,346 | 16,444 | 16,187 | → |
| Brighton | Village | Macoupin / Jersey | 2,261 | 2,254 | 2,150 | → |
| Brimfield | Village | Peoria | 920 | 868 | 834 | → |
| Broadlands | Village | Champaign | 320 | 349 | 342 | → |
| Broadview | Village | Cook | 8,315 | 7,919 | 7,692 | → |
| Broadwell | Village | Logan | 170 | 145 | 137 | → |
| Brocton | Village | Edgar | 322 | 322 | 296 | → |
| Brookfield | Village | Cook | 19,034 | 18,974 | 18,494 | → |
| Brooklyn | Village | St. Clair | 665 | 749 | 705 | → |
| Brookport | City | Massac | 1,026 | 980 | 890 | → |
| Broughton | Village | Hamilton | 194 | 192 | 186 | → |
| Browning | Village | Schuyler | 133 | 137 | 125 | → |
| Browns | Village | Edwards | 172 | 134 | 127 | → |
| Brownstown | Village | Fayette | 692 | 759 | 733 | → |
| Brussels | Village | Calhoun | 145 | 141 | 133 | → |
| Bryant | Village | Fulton | 263 | 222 | 215 | → |
| Buckingham | Village | Kankakee | 237 | 300 | 279 | → |
| Buckley | Village | Iroquois | 591 | 600 | 546 | → |
| Buckner | Village | Franklin | 479 | 460 | 445 | → |
| Buda | Village | Bureau | 581 | 538 | 506 | → |
| Buffalo | Village | Sangamon | 498 | 503 | 481 | → |
| Buffalo Grove | Village | Lake / Cook | 43,127 | 41,505 | 40,853 | → |
| Bull Valley | Village | McHenry | 1,044 | 1,129 | 1,099 | → |
| Bulpitt | Village | Christian | 206 | 222 | 203 | → |
| Buncombe | Village | Johnson | 191 | 203 | 204 | → |
| Bunker Hill | City | Macoupin | 1,824 | 1,772 | 1,686 | → |
| Burbank | City | Cook | 27,899 | 28,925 | 28,534 | → |
| Bureau Junction | Village | Bureau | 363 | 321 | 307 | → |
| Burlington | Village | Kane | 570 | 624 | 627 | → |
| Burnham | Village | Cook | 4,282 | 4,206 | 4,119 | → |
| Burnt Prairie | Village | White | 55 | 52 | 48 | → |
| Burr Ridge | Village | Cook / DuPage | 10,686 | 10,573 | 10,801 | → |
| Bush | Village | Williamson | 266 | 275 | 268 | → |
| Bushnell | City | McDonough | 3,288 | 3,117 | 2,904 | → |
| Butler | Village | Montgomery | 192 | 180 | 171 | → |
| Byron | City | Ogle | 2,933 | 3,753 | 3,603 | → |
| Cabery | Village | Ford / Kankakee | 247 | 266 | 248 | → |
| Cahokia | Village | St. Clair | 16,374 | 15,238 | 14,009 | → |
| Cairo | City | Alexander | 3,633 | 2,831 | 2,188 | → |
| Caledonia | Village | Boone | 199 | 197 | 191 | → |
| Calhoun | Village | Richland | 222 | 172 | 167 | → |
| Calumet City | City | Cook | 38,963 | 37,116 | 36,240 | → |
| Calumet Park | Village | Cook | 8,539 | 7,831 | 7,672 | → |
| Camargo | Village | Douglas | 462 | 445 | 448 | → |
| Cambria | Village | Williamson | 1,308 | 1,221 | 1,274 | → |
| Cambridge | Village | Henry | 2,198 | 2,163 | 2,087 | → |
| Camden | Village | Schuyler | 99 | 86 | 78 | → |
| Camp Point | Village | Adams | 1,295 | 1,136 | 1,100 | → |
| Campbell Hill | Village | Jackson | 335 | 333 | 311 | → |
| Campton Hills | Village | Kane | 9,054 | 11,098 | 11,192 | → |
| Campus | Village | Livingston | 155 | 166 | 159 | → |
| Canton | City | Fulton | 15,209 | 14,718 | 13,720 | → |
| Cantrall | Village | Sangamon | 146 | 139 | 136 | → |
| Capron | Village | Boone | 1,117 | 1,376 | 1,357 | → |
| Carbon Cliff | Village | Rock Island | 1,731 | 2,078 | 1,981 | → |
| Carbon Hill | Village | Grundy | 393 | 345 | 337 | → |
| Carbondale | City | Jackson | 25,933 | 26,411 | 25,376 | → |
| Carlinville | City | Macoupin | 6,179 | 5,917 | 5,543 | → |
| Carlock | Village | McLean | 472 | 552 | 563 | → |
| Carlyle | City | Clinton | 3,428 | 3,287 | 3,181 | → |
| Carmi | City | White | 5,401 | 5,240 | 4,871 | → |
| Carol Stream | Village | DuPage | 40,671 | 39,576 | 39,601 | → |
| Carpentersville | Village | Kane | 31,370 | 37,678 | 37,744 | → |
| Carrier Mills | Village | Saline | 1,936 | 1,653 | 1,584 | → |
| Carrollton | City | Greene | 2,602 | 2,484 | 2,413 | → |
| Carterville | City | Williamson | 4,630 | 5,543 | 5,866 | → |
| Carthage | City | Hancock | 2,713 | 2,605 | 2,465 | → |
| Cary | Village | McHenry | 15,647 | 18,268 | 17,788 | → |
| Casey | City | Clark / Cumberland | 2,943 | 2,782 | 2,635 | → |
| Caseyville | Village | St. Clair | 4,333 | 4,211 | 4,107 | → |
| Catlin | Village | Vermilion | 2,112 | 2,041 | 1,952 | → |
| Cave-In-Rock | Village | Hardin | 341 | 318 | 286 | → |
| Cedar Point | Village | LaSalle | 264 | 277 | 260 | → |
| Cedarville | Village | Stephenson | 736 | 742 | 691 | → |
| Central City | Village | Marion | 1,378 | 1,172 | 1,125 | → |
| Centralia | City | Jefferson / Washington / Marion / Clinton | 14,396 | 13,029 | 12,368 | → |
| Centreville | City | St. Clair | 5,990 | 5,327 | 4,965 | → |
| Cerro Gordo | Village | Piatt | 1,441 | 1,424 | 1,346 | → |
| Chadwick | Village | Carroll | 503 | 551 | 517 | → |
| Champaign | City | Champaign | 70,118 | 81,272 | 88,029 | → |
| Chandlerville | Village | Cass | 704 | 555 | 499 | → |
| Channahon | Village | Grundy / Will | 7,645 | 12,595 | 13,086 | → |
| Chapin | Village | Morgan | 596 | 512 | 483 | → |
| Charleston | City | Coles | 21,209 | 21,842 | 20,186 | → |
| Chatham | Village | Sangamon | 8,614 | 11,599 | 12,674 | → |
| Chatsworth | Town | Livingston | 1,292 | 1,212 | 1,120 | → |
| Chebanse | Village | Iroquois / Kankakee | 1,149 | 1,065 | 985 | → |
| Chenoa | City | McLean | 1,854 | 1,785 | 1,737 | → |
| Cherry | Village | Bureau | 502 | 484 | 455 | → |
| Cherry Valley | Village | Winnebago / Boone | 2,189 | 2,970 | 2,887 | → |
| Chester | City | Randolph | 8,339 | 8,586 | 8,262 | → |
| Chesterfield | Village | Macoupin | 223 | 188 | 178 | → |
| Chicago | City | Cook / DuPage | 2,895,966 | 2,695,624 | 2,705,994 | → |
| Chicago Heights | City | Cook | 32,823 | 30,365 | 29,571 | → |
| Chicago Ridge | Village | Cook | 14,267 | 14,304 | 14,050 | → |
| Chillicothe | City | Peoria | 6,022 | 6,097 | 6,073 | → |
| Chrisman | City | Edgar | 1,310 | 1,343 | 1,245 | → |
| Christopher | City | Franklin | ... | 2,847 | 2,731 | → |
| Cicero | Town | Cook | 85,993 | 84,241 | 81,597 | → |
| Cisco | Village | Piatt | 286 | 256 | 243 | → |
| Cisne | Village | Wayne | 684 | 681 | 664 | → |
| Cissna Park | Village | Iroquois | 805 | 846 | 776 | → |
| Claremont | Village | Richland | 209 | 174 | 171 | → |
| Clarendon Hills | Village | DuPage | 7,753 | 8,429 | 8,785 | → |
| Clay City | Village | Clay | 1,013 | 966 | 919 | → |
| Clayton | Village | Adams | 853 | 707 | 675 | → |
| Clear Lake | Village | Sangamon | 263 | 229 | 225 | → |
| Cleveland | Village | Henry | 252 | 190 | 182 | → |
| Clifton | Village | Iroquois | 1,307 | 1,468 | 1,344 | → |
| Clinton | City | De Witt | 7,370 | 7,397 | 6,927 | → |
| Coal City | Village | Grundy / Will | 4,852 | 5,598 | 5,368 | → |
| Coal Valley | Village | Henry / Rock Island | 3,584 | 3,726 | 3,757 | → |
| Coalton | Village | Montgomery | 301 | 304 | 286 | → |
| Coatsburg | Village | Adams | 222 | 147 | 142 | → |
| Cobden | Village | Union | 1,153 | 1,145 | 1,079 | → |
| Coffeen | City | Montgomery | 729 | 685 | 646 | → |
| Colchester | City | McDonough | 1,510 | 1,399 | 1,299 | → |
| Coleta | Village | Whiteside | 160 | 164 | 156 | → |
| Colfax | Village | McLean | 989 | 1,059 | 1,022 | → |
| Collinsville | City | St. Clair / Madison | 24,673 | 25,665 | 24,621 | → |
| Colona | City | Henry | 5,067 | 5,149 | 5,125 | → |
| Colp | Village | Williamson | 226 | 223 | 220 | → |
| Columbia | City | St. Clair / Monroe | 7,875 | 9,685 | 10,401 | → |
| Columbus | Village | Adams | 112 | 99 | 96 | → |
| Compton | Village | Lee | 351 | 303 | 284 | → |
| Concord | Village | Morgan | 174 | 167 | 158 | → |
| Congerville | Village | Woodford | 580 | 477 | 490 | → |
| Cooksville | Village | McLean | 211 | 189 | 183 | → |
| Cordova | Village | Rock Island | 654 | 674 | 649 | → |
| Cornell | Village | Livingston | 503 | 486 | 460 | → |
| Cortland | Town | DeKalb | 2,090 | 4,271 | 4,361 | → |
| Coulterville | Village | Randolph | 1,149 | 945 | 898 | → |
| Country Club Hills | City | Cook | 16,211 | 16,666 | 16,511 | → |
| Countryside | City | Cook | 5,791 | 5,882 | 5,954 | → |
| Cowden | Village | Shelby | 614 | 615 | 580 | → |
| Crainville | Village | Williamson | 1,077 | 1,267 | 1,411 | → |
| Creal Springs | City | Williamson | 705 | 543 | 532 | → |
| Crescent City | Village | Iroquois | 637 | 615 | 568 | → |
| Crest Hill | City | Will | 13,481 | 20,830 | 20,568 | → |
| Creston | Village | Ogle | 537 | 662 | 647 | → |
| Crestwood | Village | Cook | 11,298 | 10,951 | 10,770 | → |
| Crete | Village | Will / Cook | 7,731 | 8,252 | 8,117 | → |
| Creve Coeur | Village | Tazewell | 5,444 | 5,460 | 5,137 | → |
| Crossville | Village | White | 741 | 745 | 688 | → |
| Crystal Lake | City | McHenry | 37,976 | 40,766 | 40,036 | → |
| Cuba | City | Fulton | 1,427 | 1,294 | 1,184 | → |
| Cullom | Village | Livingston | 556 | 566 | 524 | → |
| Curran | Village | Sangamon | 247 | 212 | 207 | → |
| Cutler | Village | Perry | 545 | 441 | 420 | → |
| Cypress | Village | Johnson | 268 | 234 | 235 | → |
| Dahlgren | Village | Hamilton | 514 | 525 | 505 | → |
| Dakota | Village | Stephenson | 508 | 507 | 469 | → |
| Dallas City | City | Hancock / Henderson | 1,028 | 945 | 878 | → |
| Dalton City | Village | Moultrie | 577 | 546 | 516 | → |
| Dalzell | Village | LaSalle / Bureau | 724 | 716 | 668 | → |
| Damiansville | Village | Clinton | 499 | 491 | 496 | → |
| Dana | Village | LaSalle | 171 | 159 | 153 | → |
| Danforth | Village | Iroquois | 579 | 605 | 557 | → |
| Danvers | Village | McLean | 1,182 | 1,154 | 1,112 | → |
| Danville | City | Vermilion | 34,557 | 33,029 | 30,898 | → |
| Darien | City | DuPage | 22,943 | 22,086 | 21,954 | → |
| Davis | Village | Stephenson | 665 | 677 | 629 | → |
| Davis Junction | Village | Ogle | 941 | 2,373 | 2,328 | → |
| Dawson | Village | Sangamon | 520 | 509 | 487 | → |
| De Land | Village | Piatt | 470 | 446 | 425 | → |
| De Pue | Village | Bureau | 1,840 | 1,833 | 1,705 | → |
| De Soto | Village | Jackson | 1,633 | 1,585 | 1,518 | → |
| De Witt | Village | De Witt | 185 | 184 | 178 | → |
| Decatur | City | Macon | 82,061 | 76,131 | 71,290 | → |
| Deer Creek | Village | Tazewell / Woodford | 602 | 704 | 666 | → |
| Deer Grove | Village | Whiteside | 47 | 48 | 46 | → |
| Deer Park | Village | Lake / Cook | 3,172 | 3,130 | 4,259 | → |
| Deerfield | Village | Lake / Cook | 18,487 | 18,227 | 18,779 | → |
| DeKalb | City | DeKalb | 39,017 | 44,123 | 42,611 | → |
| Delavan | City | Tazewell | 1,799 | 1,703 | 1,616 | → |
| Des Plaines | City | Cook | 56,900 | 58,385 | 58,959 | → |
| Detroit | Village | Pike | 95 | 83 | 79 | → |
| Diamond | Village | Grundy / Will | 1,386 | 2,535 | 2,528 | → |
| Dieterich | Village | Effingham | 608 | 621 | 607 | → |
| Divernon | Village | Sangamon | 1,197 | 1,172 | 1,119 | → |
| Dix | Village | Jefferson | 501 | 456 | 443 | → |
| Dixmoor | Village | Cook | 3,934 | 3,649 | 3,616 | → |
| Dixon | City | Lee | 15,835 | 15,757 | 15,165 | → |
| Dolton | Village | Cook | 25,460 | 23,074 | 22,547 | → |
| Dongola | Village | Union | 817 | 724 | 685 | → |
| Donnellson | Village | Bond / Montgomery | 258 | 210 | 199 | → |
| Donovan | Village | Iroquois | 340 | 304 | 281 | → |
| Dorchester | Village | Macoupin | 141 | 151 | 142 | → |
| Dover | Village | Bureau | 172 | 164 | 153 | → |
| Dowell | Village | Jackson | 438 | 408 | 386 | → |
| Downers Grove | Village | DuPage | 49,288 | 48,874 | 49,387 | → |
| Downs | Village | McLean | 850 | 992 | 958 | → |
| Du Bois | Village | Washington | 218 | 205 | 191 | → |
| Du Quoin | City | Perry | 6,492 | 6,109 | 5,748 | → |
| Dunfermline | Village | Fulton | 270 | 313 | 285 | → |
| Dunlap | Village | Peoria | 962 | 1,463 | 1,422 | → |
| Dupo | Village | St. Clair | 3,843 | 4,130 | 3,844 | → |
| Durand | Village | Winnebago | 1,151 | 1,451 | 1,398 | → |
| Dwight | Village | Grundy / Livingston | 4,365 | 4,262 | 3,993 | → |
| Eagarville | Village | Macoupin | 128 | 127 | 122 | → |
| Earlville | City | LaSalle | 1,752 | 1,701 | 1,600 | → |
| East Alton | Village | Madison | 6,874 | 6,276 | 6,025 | → |
| East Brooklyn | Village | Grundy | 111 | 106 | 100 | → |
| East Cape Girardeau | Village | Alexander | 431 | 387 | 300 | → |
| East Carondelet | Village | St. Clair | 298 | 504 | 471 | → |
| East Dubuque | City | Jo Daviess | 1,886 | 1,709 | 1,585 | → |
| East Dundee | Village | Cook / Kane | 2,978 | 2,868 | 3,192 | → |
| East Galesburg | Village | Knox | 842 | 816 | 778 | → |
| East Gillespie | Village | Macoupin | 234 | 270 | 264 | → |
| East Hazel Crest | Village | Cook | 1,607 | 1,545 | 1,511 | → |
| East Moline | City | Rock Island | 21,555 | 21,317 | 20,890 | → |
| East Peoria | City | Tazewell | 22,693 | 23,431 | 22,561 | → |
| East St. Louis | City | St. Clair | 31,667 | 26,933 | 26,346 | → |
| Easton | Village | Mason | 358 | 321 | 293 | → |
| Eddyville | Village | Pope | 143 | 103 | 99 | → |
| Edgewood | Village | Effingham | 529 | 444 | 434 | → |
| Edinburg | Village | Christian | 1,136 | 1,078 | 1,019 | → |
| Edwardsville | City | Madison | 21,703 | 24,354 | 24,969 | → |
| Effingham | City | Effingham | 12,446 | 12,352 | 12,627 | → |
| El Dara | Village | Pike | 89 | 78 | 76 | → |
| El Paso | City | Woodford / McLean | 2,804 | 2,813 | 2,735 | → |
| Elburn | Village | Kane | 2,768 | 5,602 | 5,926 | → |
| Eldorado | City | Saline | 4,520 | 4,133 | 3,962 | → |
| Eldred | Village | Greene | 223 | 201 | 187 | → |
| Elgin | City | Cook / Kane | 94,638 | 108,147 | 111,683 | → |
| Elizabeth | Village | Jo Daviess | 712 | 766 | 726 | → |
| Elizabethtown | Village | Hardin | 352 | 311 | 281 | → |
| Elk Grove Village | Village | Cook / DuPage | 34,666 | 33,143 | 32,458 | → |
| Elkhart | Village | Logan | 457 | 407 | 395 | → |
| Elkville | Village | Jackson | 981 | 928 | 871 | → |
| Elliott | Village | Ford | 332 | 296 | 275 | → |
| Ellis Grove | Village | Randolph | 400 | 366 | 349 | → |
| Ellisville | Village | Fulton | 85 | 96 | 93 | → |
| Ellsworth | Village | McLean | 270 | 195 | 199 | → |
| Elmhurst | City | Cook / DuPage | 42,946 | 44,135 | 46,558 | → |
| Elmwood | City | Peoria | 1,957 | 2,097 | 2,029 | → |
| Elmwood Park | Village | Cook | 25,408 | 24,883 | 24,263 | → |
| Elsah | Village | Jersey | 632 | 673 | 606 | → |
| Elvaston | Village | Hancock | 155 | 165 | 155 | → |
| Elwood | Village | Will | 1,609 | 2,283 | 2,260 | → |
| Emden | Village | Logan | 521 | 485 | 467 | → |
| Emington | Village | Livingston | 120 | 117 | 108 | → |
| Energy | Village | Williamson | 1,159 | 1,153 | 1,129 | → |
| Enfield | Village | White | 621 | 596 | 556 | → |
| Equality | Village | Gallatin | 739 | 595 | 539 | → |
| Erie | Village | Whiteside | 1,580 | 1,607 | 1,517 | → |
| Essex | Village | Kankakee | 576 | 802 | 764 | → |
| Eureka | City | Woodford | 5,048 | 5,327 | 5,282 | → |
| Evanston | City | Cook | 74,269 | 74,483 | 74,106 | → |
| Evansville | Village | Randolph | 741 | 701 | 657 | → |
| Evergreen Park | Village | Cook | 20,820 | 19,848 | 19,325 | → |
| Ewing | Village | Franklin | 312 | 307 | 296 | → |
| Exeter | Village | Scott | 72 | 65 | 60 | → |
| Fairbury | City | Livingston | 3,938 | 3,803 | 3,623 | → |
| Fairfield | City | Wayne | 5,485 | 5,151 | 4,981 | → |
| Fairmont City | Village | St. Clair / Madison | 2,431 | 2,629 | 2,471 | → |
| Fairmount | Village | Vermilion | 648 | 642 | 606 | → |
| Fairview | Village | Fulton | 498 | 522 | 478 | → |
| Fairview Heights | City | St. Clair | 14,981 | 17,078 | 16,448 | → |
| Farina | Village | Marion / Fayette | 558 | 518 | 502 | → |
| Farmer City | City | De Witt | 2,059 | 2,011 | 1,941 | → |
| Farmersville | Village | Montgomery | 766 | 724 | 684 | → |
| Farmington | City | Fulton / Peoria | 2,498 | 2,441 | 2,258 | → |
| Fayetteville | Village | St. Clair | 383 | 366 | 338 | → |
| Ferris | Village | Hancock | 169 | 156 | 144 | → |
| Fidelity | Village | Jersey | 111 | 114 | 107 | → |
| Fieldon | Village | Jersey | 271 | 239 | 218 | → |
| Fillmore | Village | Montgomery | 365 | 330 | 312 | → |
| Findlay | Village | Shelby | 711 | 683 | 644 | → |
| Fisher | Village | Champaign | 1,646 | 1,879 | 1,956 | → |
| Fithian | Village | Vermilion | 511 | 485 | 458 | → |
| Flanagan | Village | Livingston | 1,131 | 1,114 | 1,063 | → |
| Flat Rock | Village | Crawford | 429 | 331 | 310 | → |
| Flora | City | Clay | 5,216 | 5,066 | 4,883 | → |
| Florence | Village | Pike | 67 | 38 | 37 | → |
| Flossmoor | Village | Cook | 9,262 | 9,441 | 9,237 | → |
| Foosland | Village | Champaign | 90 | 101 | 99 | → |
| Ford Heights | Village | Cook | 3,476 | 2,772 | 2,705 | → |
| Forest City | Village | Mason | 291 | 246 | 229 | → |
| Forest Park | Village | Cook | 15,666 | 14,171 | 13,807 | → |
| Forest View | Village | Cook | 706 | 698 | 678 | → |
| Forrest | Village | Livingston | 1,230 | 1,219 | 1,142 | → |
| Forreston | Village | Ogle | 1,475 | 1,446 | 1,356 | → |
| Forsyth | Village | Macon | 2,465 | 3,487 | 3,496 | → |
| Fox Lake | Village | Lake / McHenry | 9,054 | 10,665 | 10,481 | → |
| Fox River Grove | Village | Lake / McHenry | 4,959 | 4,791 | 4,630 | → |
| Frankfort | Village | Cook / Will | 10,295 | 17,804 | 19,178 | → |
| Franklin | Village | Morgan | ... | 638 | 604 | → |
| Franklin Grove | Village | Lee | 1,077 | 1,021 | 948 | → |
| Franklin Park | Village | Cook | 19,483 | 18,311 | 17,808 | → |
| Freeburg | Village | St. Clair | 3,975 | 4,393 | 4,257 | → |
| Freeman Spur | Village | Williamson / Franklin | 267 | 289 | 281 | → |
| Freeport | City | Stephenson | 26,389 | 25,641 | 23,920 | → |
| Fulton | City | Whiteside | 3,895 | 3,480 | 3,346 | → |
| Fults | Village | Monroe | 28 | 26 | 28 | → |
| Galatia | Village | Saline | 1,027 | 933 | 894 | → |
| Galena | City | Jo Daviess | 3,478 | 3,423 | 3,183 | → |
| Galesburg | City | Knox | 33,755 | 32,195 | 30,432 | → |
| Galva | City | Henry | 2,784 | 2,587 | 2,485 | → |
| Gardner | Village | Grundy | 1,439 | 1,463 | 1,394 | → |
| Garrett | Village | Douglas | 205 | 162 | 158 | → |
| Gays | Village | Moultrie | 270 | 281 | 262 | → |
| Geneseo | City | Henry | 6,427 | 6,623 | 6,514 | → |
| Geneva | City | Kane | 19,525 | 21,493 | 21,861 | → |
| Genoa | City | DeKalb | 4,176 | 5,178 | 5,207 | → |
| Georgetown | City | Vermilion | 3,550 | 3,475 | 3,234 | → |
| German Valley | Village | Stephenson | 486 | 457 | 427 | → |
| Germantown | Village | Clinton | 1,171 | 1,285 | 1,280 | → |
| Germantown Hills | Village | Woodford | 2,282 | 3,398 | 3,430 | → |
| Gibson City | City | Ford | 3,352 | 3,411 | 3,297 | → |
| Gifford | Village | Champaign | 827 | 974 | 1,085 | → |
| Gilberts | Village | Kane | 1,294 | 6,879 | 8,097 | → |
| Gillespie | City | Macoupin | 3,414 | 3,322 | 3,121 | → |
| Gilman | City | Iroquois | 1,833 | 1,814 | 1,682 | → |
| Girard | City | Macoupin | 2,244 | 2,103 | 2,010 | → |
| Gladstone | Village | Henderson | 287 | 281 | 265 | → |
| Glasford | Village | Peoria | 1,077 | 1,022 | 967 | → |
| Glasgow | Village | Scott | 173 | 141 | 131 | → |
| Glen Carbon | Village | Madison | 10,587 | 12,960 | 12,959 | → |
| Glen Ellyn | Village | DuPage | 27,164 | 27,783 | 27,928 | → |
| Glencoe | Village | Cook | 8,734 | 8,721 | 8,869 | → |
| Glendale Heights | Village | DuPage | 31,870 | 34,291 | 33,928 | → |
| Glenview | Village | Cook | 41,739 | 44,722 | 47,258 | → |
| Glenwood | Village | Cook | 8,930 | 8,985 | 8,792 | → |
| Godfrey | Village | Madison | 16,891 | 18,006 | 17,559 | → |
| Godley | Village | Grundy / Will | 595 | 601 | 737 | → |
| Golconda | City | Pope | 757 | 670 | 640 | → |
| Golden | Village | Adams | 623 | 642 | 621 | → |
| Golden Gate | Village | Wayne | 100 | 68 | 66 | → |
| Golf | Village | Cook | 456 | 493 | 496 | → |
| Good Hope | Village | McDonough | 426 | 396 | 367 | → |
| Goodfield | Village | Tazewell / Woodford | 788 | 866 | 982 | → |
| Goreville | Village | Johnson | 969 | 1,050 | 1,068 | → |
| Gorham | Village | Jackson | 256 | 236 | 223 | → |
| Grafton | City | Jersey | 626 | 671 | 636 | → |
| Grand Ridge | Village | LaSalle | 546 | 560 | 526 | → |
| Grand Tower | City | Jackson | 622 | 605 | 568 | → |
| Grandview | Village | Sangamon | 1,534 | 1,441 | 1,393 | → |
| Granite City | City | Madison | 31,891 | 29,807 | 28,476 | → |
| Grant Park | Village | Kankakee | 1,380 | 1,329 | 1,243 | → |
| Grantfork | Village | Madison | 257 | 344 | 339 | → |
| Granville | Village | Putnam | 1,405 | 1,427 | 1,317 | → |
| Grayslake | Village | Lake | 18,563 | 21,055 | 20,903 | → |
| Grayville | City | White / Edwards | 1,837 | 1,668 | 1,574 | → |
| Green Oaks | Village | Lake | 3,573 | 3,865 | 3,868 | → |
| Green Valley | Village | Tazewell | 706 | 709 | 666 | → |
| Greenfield | City | Greene | 1,177 | 1,071 | 991 | → |
| Greenup | Village | Cumberland | 1,554 | 1,528 | 1,491 | → |
| Greenview | Village | Menard | 862 | 778 | 730 | → |
| Greenville | City | Bond | 7,030 | 7,035 | 6,453 | → |
| Greenwood | Village | McHenry | 243 | 259 | 250 | → |
| Gridley | Village | McLean | 1,429 | 1,432 | 1,414 | → |
| Griggsville | City | Pike | 1,256 | 1,226 | 1,153 | → |
| Gulf Port | Village | Henderson | 205 | 54 | 49 | → |
| Gurnee | Village | Lake | 28,809 | 31,226 | 30,576 | → |
| Hainesville | Village | Lake | 2,028 | 3,679 | 3,608 | → |
| Hamburg | Village | Calhoun | 125 | 128 | 119 | → |
| Hamel | Village | Madison | 570 | 816 | 813 | → |
| Hamilton | City | Hancock | 3,029 | 2,951 | 2,740 | → |
| Hammond | Village | Piatt | 518 | 509 | 480 | → |
| Hampshire | Village | Kane | 2,871 | 5,565 | 6,324 | → |
| Hampton | Village | Rock Island | 1,660 | 1,832 | 1,765 | → |
| Hanaford | Village | Franklin | 171 | 327 | 324 | → |
| Hanna City | Village | Peoria | 1,025 | 1,233 | 1,197 | → |
| Hanover | Village | Jo Daviess | 857 | 845 | 774 | → |
| Hanover Park | Village | Cook / DuPage | 38,129 | 38,103 | 37,747 | → |
| Hardin | Village | Calhoun | 956 | 962 | 913 | → |
| Harmon | Village | Lee | 145 | 120 | 112 | → |
| Harrisburg | City | Saline | 9,762 | 9,021 | 8,664 | → |
| Harristown | Village | Macon | 1,358 | 1,371 | 1,301 | → |
| Hartford | Village | Madison | 1,532 | 1,428 | 1,353 | → |
| Hartsburg | Village | Logan | 343 | 314 | 299 | → |
| Harvard | City | McHenry | 8,066 | 9,435 | 9,130 | → |
| Harvel | Village | Christian / Montgomery | 239 | 223 | 213 | → |
| Harvey | City | Cook | 30,031 | 25,264 | 24,641 | → |
| Harwood Heights | Village | Cook | 8,307 | 8,611 | 8,413 | → |
| Havana | City | Mason | 3,594 | 3,301 | 3,040 | → |
| Hawthorn Woods | Village | Lake | 6,058 | 7,782 | 8,552 | → |
| Hazel Crest | Village | Cook | 14,805 | 14,009 | 13,694 | → |
| Hebron | Village | McHenry | 1,088 | 1,216 | 1,196 | → |
| Hecker | Village | St. Clair / Monroe | 470 | 486 | 473 | → |
| Henderson | Village | Knox | 317 | 255 | 242 | → |
| Hennepin | Village | Putnam | 700 | 759 | 707 | → |
| Henning | Village | Vermilion | 246 | 251 | 235 | → |
| Henry | City | Marshall | 2,534 | 2,464 | 2,232 | → |
| Herrick | Village | Shelby | 511 | 436 | 433 | → |
| Herrin | City | Williamson | 11,247 | 12,509 | 12,838 | → |
| Herscher | Village | Kankakee | 1,510 | 1,596 | 1,512 | → |
| Hettick | Village | Macoupin | 182 | 181 | 172 | → |
| Heyworth | Village | McLean | 2,514 | 2,840 | 2,899 | → |
| Hickory Hills | City | Cook | 13,935 | 14,049 | 13,834 | → |
| Hidalgo | Village | Jasper | 127 | 106 | 107 | → |
| Highland | City | Madison | 8,462 | 9,925 | 9,850 | → |
| Highland Park | City | Lake | 30,335 | 29,745 | 29,622 | → |
| Highwood | City | Lake | 5,391 | 5,449 | 5,272 | → |
| Hillcrest | Village | Ogle | 1,184 | 1,318 | 1,237 | → |
| Hillsboro | City | Montgomery | 6,389 | 6,207 | 5,996 | → |
| Hillsdale | Village | Rock Island | 596 | 517 | 507 | → |
| Hillside | Village | Cook | 8,163 | 8,163 | 7,958 | → |
| Hillview | Village | Greene | 182 | 193 | 178 | → |
| Hinckley | Village | DeKalb | 1,991 | 2,071 | 2,037 | → |
| Hindsboro | Village | Douglas | 361 | 311 | 298 | → |
| Hinsdale | Village | Cook / DuPage | 17,417 | 16,818 | 17,652 | → |
| Hodgkins | Village | Cook | 2,135 | 1,897 | 1,885 | → |
| Hoffman | Village | Clinton | 463 | 508 | 481 | → |
| Hoffman Estates | Village | Cook / Kane | 49,685 | 51,891 | 51,197 | → |
| Holiday Hills | Village | McHenry | 743 | 601 | 579 | → |
| Hollowayville | Village | Bureau | 82 | 92 | 87 | → |
| Homer | Village | Champaign | 1,204 | 1,193 | 1,168 | → |
| Homer Glen | Village | Will | 22,301 | 24,215 | 24,582 | → |
| Hometown | City | Cook | 4,467 | 4,349 | 4,222 | → |
| Homewood | Village | Cook | 19,578 | 19,307 | 18,885 | → |
| Hoopeston | City | Vermilion | 5,696 | 5,353 | 5,079 | → |
| Hooppole | Village | Henry | 162 | 204 | 196 | → |
| Hopedale | Village | Tazewell | 924 | 868 | 826 | → |
| Hopewell | Village | Marshall | 383 | 410 | 397 | → |
| Hopkins Park | Village | Kankakee | 722 | 605 | 600 | → |
| Hoyleton | Village | Washington | 571 | 531 | 499 | → |
| Hudson | Village | McLean | 1,538 | 1,831 | 1,818 | → |
| Huey | Village | Clinton | 188 | 169 | 162 | → |
| Hull | Village | Pike | 474 | 461 | 434 | → |
| Humboldt | Village | Coles | 471 | 437 | 420 | → |
| Hume | Village | Edgar | 376 | 380 | 351 | → |
| Huntley | Village | Kane / McHenry | 5,800 | 24,316 | 27,440 | → |
| Hurst | City | Williamson | 806 | 799 | 790 | → |
| Hutsonville | Village | Crawford | 619 | 540 | 526 | → |
| Illiopolis | Village | Sangamon | 926 | 891 | 849 | → |
| Ina | Village | Jefferson | 2,520 | 2,334 | 2,273 | → |
| Indian Creek | Village | Lake | ... | 545 | 534 | → |
| Indian Head Park | Village | Cook | 3,874 | 3,816 | 3,751 | → |
| Indianola | Village | Vermilion | 227 | 276 | 263 | → |
| Industry | Village | McDonough | 566 | 478 | 444 | → |
| Inverness | Village | Cook | 6,949 | 7,400 | 7,438 | → |
| Iola | Village | Clay | 171 | 141 | 134 | → |
| Ipava | Village | Fulton | 518 | 470 | 429 | → |
| Iroquois | Village | Iroquois | 205 | 154 | 141 | → |
| Irving | Village | Montgomery | 500 | 495 | 467 | → |
| Irvington | Village | Washington | 791 | 665 | 621 | → |
| Irwin | Village | Kankakee | 90 | 74 | 70 | → |
| Island Lake | Village | Lake / McHenry | 8,173 | 8,081 | 8,072 | → |
| Itasca | Village | DuPage | 8,243 | 8,650 | 9,867 | → |
| Iuka | Village | Marion | 596 | 489 | 468 | → |
| Ivesdale | Village | Piatt / Champaign | 290 | 267 | 258 | → |
| Jacksonville | City | Morgan | 19,070 | 19,446 | 18,749 | → |
| Jeffersonville | Village | Wayne | 371 | 367 | 359 | → |
| Jeisyville | Village | Christian | 128 | 107 | 102 | → |
| Jerome | Village | Sangamon | 1,769 | 1,677 | 1,590 | → |
| Jerseyville | City | Jersey | 8,127 | 8,466 | 8,236 | → |
| Jewett | Village | Cumberland | 238 | 223 | 218 | → |
| Johnsburg | Village | McHenry | 5,413 | 6,361 | 6,324 | → |
| Johnsonville | Village | Wayne | 69 | 77 | 75 | → |
| Johnston City | City | Williamson | 3,599 | 3,563 | 3,441 | → |
| Joliet | City | Kendall / Will | 106,849 | 147,435 | 148,099 | → |
| Jonesboro | City | Union | 1,886 | 1,822 | 1,709 | → |
| Joppa | Village | Massac | ... | 338 | 305 | → |
| Joy | Village | Mercer | 377 | 417 | 386 | → |
| Junction | Village | Gallatin | 142 | 129 | 116 | → |
| Junction City | Village | Marion | 563 | 482 | 468 | → |
| Justice | Village | Cook | 12,143 | 12,926 | 12,710 | → |
| Kampsville | Village | Calhoun | 319 | 328 | 309 | → |
| Kane | Village | Greene | 468 | 438 | 409 | → |
| Kaneville | Village | Kane | 438 | 482 | 486 | → |
| Kangley | Village | LaSalle | 283 | 251 | 237 | → |
| Kankakee | City | Kankakee | 27,371 | 27,562 | 26,052 | → |
| Kansas | Village | Edgar | 836 | 787 | 728 | → |
| Kappa | Village | Woodford | 181 | 232 | 238 | → |
| Karnak | Village | Pulaski | 641 | 497 | 445 | → |
| Kaskaskia | Village | Randolph | 9 | 14 | 13 | → |
| Keenes | Village | Wayne | 102 | 83 | 83 | → |
| Keensburg | Village | Wabash | 265 | 210 | 204 | → |
| Keithsburg | City | Mercer | 720 | 609 | 578 | → |
| Kell | Village | Marion | 208 | 217 | 208 | → |
| Kempton | Village | Ford | 236 | 227 | 211 | → |
| Kenilworth | Village | Cook | 2,614 | 2,508 | 2,494 | → |
| Kenney | Village | De Witt | 373 | 327 | 316 | → |
| Kewanee | City | Henry | 12,907 | 12,919 | 12,400 | → |
| Keyesport | Village | Bond / Clinton | 491 | 425 | 408 | → |
| Kilbourne | Village | Mason | 378 | 302 | 281 | → |
| Kildeer | Village | Lake | 3,354 | 3,906 | 4,019 | → |
| Kincaid | Village | Christian | 1,439 | 1,506 | 1,390 | → |
| Kinderhook | Village | Pike | 255 | 216 | 207 | → |
| Kingston | Village | DeKalb | 970 | 1,164 | 1,159 | → |
| Kingston Mines | Village | Peoria | 284 | 302 | 286 | → |
| Kinmundy | City | Marion | 899 | 792 | 759 | → |
| Kinsman | Village | Grundy | 109 | 99 | 97 | → |
| Kirkland | Village | DeKalb | 1,166 | 1,747 | 1,718 | → |
| Kirkwood | Village | Warren | 794 | 714 | 681 | → |
| Knoxville | City | Knox | 3,130 | 2,917 | 2,765 | → |
| La Fayette | Village | Stark | 230 | 223 | 203 | → |
| La Grange | Village | Cook | 15,738 | 15,550 | 15,440 | → |
| La Grange Park | Village | Cook | 13,226 | 13,580 | 13,296 | → |
| La Harpe | City | Hancock | 1,389 | 1,232 | 1,156 | → |
| La Moille | Village | Bureau | 761 | 726 | 686 | → |
| La Prairie | Village | Adams | 60 | 47 | 46 | → |
| La Rose | Village | Marshall | 159 | 144 | 131 | → |
| Lacon | City | Marshall | 1,995 | 1,937 | 1,749 | → |
| Ladd | Village | Bureau | 1,315 | 1,295 | 1,209 | → |
| Lake Barrington | Village | Lake | 4,766 | 4,956 | 4,879 | → |
| Lake Bluff | Village | Lake | 6,043 | 5,703 | 5,617 | → |
| Lake Forest | City | Lake | 20,068 | 19,376 | 19,544 | → |
| Lake in the Hills | Village | McHenry | 23,577 | 29,013 | 28,835 | → |
| Lake Ka-ho | Village | Macoupin | 260 | 236 | 224 | → |
| Lake Villa | Village | Lake | 5,916 | 8,629 | 8,627 | → |
| Lake Zurich | Village | Lake | 18,472 | 19,693 | 20,022 | → |
| Lakemoor | Village | Lake / McHenry | 2,853 | 6,059 | 6,014 | → |
| Lakewood | Village | McHenry | 2,321 | 3,820 | 3,985 | → |
| Lanark | City | Carroll | 1,581 | 1,461 | 1,334 | → |
| Lansing | Village | Cook | 28,281 | 28,351 | 27,657 | → |
| LaSalle | City | LaSalle | 9,773 | 9,635 | 9,064 | → |
| Latham | Village | Logan | 366 | 388 | 368 | → |
| Lawrenceville | City | Lawrence | 4,756 | 4,418 | 4,383 | → |
| Le Roy | City | McLean | 3,350 | 3,560 | 3,544 | → |
| Leaf River | Village | Ogle | 555 | 443 | 411 | → |
| Lebanon | City | St. Clair | 3,558 | 4,455 | 4,274 | → |
| Lee | Village | DeKalb / Lee | 313 | 345 | 327 | → |
| Leland | Village | LaSalle | 967 | 977 | 923 | → |
| Leland Grove | City | Sangamon | 1,570 | 1,489 | 1,472 | → |
| Lemont | Village | Cook / DuPage / Will | 13,216 | 16,039 | 17,155 | → |
| Lena | Village | Stephenson | 2,890 | 2,914 | 2,734 | → |
| Lenzburg | Village | St. Clair | 578 | 518 | 490 | → |
| Leonore | Village | LaSalle | 114 | 130 | 124 | → |
| Lerna | Village | Coles | 342 | 283 | 272 | → |
| Lewistown | City | Fulton | 2,521 | 2,383 | 2,183 | → |
| Lexington | City | McLean | 1,975 | 2,053 | 2,033 | → |
| Liberty | Village | Adams | 522 | 523 | 507 | → |
| Libertyville | Village | Lake | 20,753 | 20,412 | 20,359 | → |
| Lily Lake | Village | Kane | 843 | 993 | 1,032 | → |
| Lima | Village | Adams | 216 | 153 | 148 | → |
| Limestone | Village | Kankakee | 1,618 | 1,600 | 1,528 | → |
| Lincoln | City | Logan | 15,270 | 14,549 | 13,685 | → |
| Lincolnshire | Village | Lake | 6,126 | 7,279 | 7,925 | → |
| Lincolnwood | Village | Cook | 12,362 | 12,590 | 12,349 | → |
| Lindenhurst | Village | Lake | 12,563 | 14,568 | 14,328 | → |
| Lisbon | Village | Kendall | 278 | 292 | 311 | → |
| Lisle | Village | DuPage | 22,160 | 22,514 | 23,394 | → |
| Litchfield | City | Montgomery | 7,061 | 7,128 | 6,753 | → |
| Little York | Village | Warren | 290 | 331 | 314 | → |
| Littleton | Village | Schuyler | 196 | 181 | 165 | → |
| Liverpool | Village | Fulton | 123 | 129 | 125 | → |
| Livingston | Village | Madison | 823 | 858 | 813 | → |
| Loami | Village | Sangamon | 812 | 745 | 746 | → |
| Lockport | City | Will | 15,004 | 24,840 | 25,508 | → |
| Loda | Village | Iroquois | 418 | 407 | 403 | → |
| Lomax | Village | Henderson | 549 | 449 | 404 | → |
| Lombard | Village | DuPage | 42,341 | 43,304 | 44,523 | → |
| London Mills | Village | Fulton / Knox | 445 | 392 | 378 | → |
| Long Creek | Village | Macon | 1,424 | 1,331 | 1,282 | → |
| Long Grove | Village | Lake | 6,728 | 7,921 | 7,956 | → |
| Long Point | Village | Livingston | 247 | 226 | 212 | → |
| Longview | Village | Champaign | 154 | 153 | 150 | → |
| Loraine | Village | Adams | 363 | 315 | 303 | → |
| Lostant | Village | LaSalle | 483 | 506 | 484 | → |
| Louisville | Village | Clay | 1,302 | 1,148 | 1,100 | → |
| Loves Park | City | Boone / Winnebago | 20,255 | 23,972 | 23,342 | → |
| Lovington | Village | Moultrie | 1,219 | 1,120 | 1,052 | → |
| Ludlow | Village | Champaign | 367 | 371 | 362 | → |
| Lyndon | Village | Whiteside | 566 | 648 | 612 | → |
| Lynnville | Village | Morgan | 137 | 119 | 115 | → |
| Lynwood | Village | Cook | 7,979 | 9,026 | 9,213 | → |
| Lyons | Village | Cook | 10,264 | 10,733 | 10,469 | → |
| Macedonia | Village | Franklin / Hamilton | 59 | 63 | 61 | → |
| Machesney Park | Village | Winnebago | 20,817 | 23,524 | 22,695 | → |
| Mackinaw | Village | Tazewell | 1,582 | 1,950 | 1,907 | → |
| Macomb | City | McDonough | 18,554 | 19,292 | 17,559 | → |
| Macon | City | Macon | 1,278 | 1,151 | 1,120 | → |
| Madison | City | St. Clair / Madison | 4,539 | 3,893 | 3,794 | → |
| Maeystown | Village | Monroe | 138 | 159 | 161 | → |
| Magnolia | Village | Putnam | 279 | 260 | 249 | → |
| Mahomet | Village | Champaign | 5,257 | 7,362 | 8,628 | → |
| Makanda | Village | Jackson | 436 | 561 | 536 | → |
| Malden | Village | Bureau | 343 | 362 | 344 | → |
| Malta | Village | DeKalb | 956 | 1,169 | 1,154 | → |
| Manchester | Village | Scott | 354 | 292 | 269 | → |
| Manhattan | Village | Will | 3,341 | 7,051 | 7,999 | → |
| Manito | Village | Mason | 1,711 | 1,642 | 1,507 | → |
| Manlius | Village | Bureau | 357 | 359 | 337 | → |
| Mansfield | Village | Piatt | ... | 1,006 | 955 | → |
| Manteno | Village | Kankakee | 6,494 | 9,208 | 8,991 | → |
| Maple Park | Village | DeKalb / Kane | 778 | 1,308 | 1,337 | → |
| Mapleton | Village | Peoria | 250 | 272 | 272 | → |
| Maquon | Village | Knox | 316 | 289 | 271 | → |
| Marengo | City | McHenry | 6,372 | 7,663 | 7,457 | → |
| Marietta | Village | Fulton | 149 | 113 | 110 | → |
| Marine | Village | Madison | 909 | 968 | 926 | → |
| Marion | City | Williamson / Johnson | 15,960 | 17,212 | 17,620 | → |
| Marissa | Village | St. Clair | 2,165 | 1,978 | 1,825 | → |
| Mark | Village | Putnam | 551 | 557 | 541 | → |
| Markham | City | Cook | 12,669 | 12,533 | 12,418 | → |
| Maroa | City | Macon | 1,698 | 1,801 | 1,716 | → |
| Marquette Heights | City | Tazewell | 2,801 | 2,824 | 2,663 | → |
| Marseilles | City | LaSalle | 4,645 | 5,115 | 4,873 | → |
| Marshall | City | Clark | 3,979 | 3,933 | 3,843 | → |
| Martinsville | City | Clark | 1,218 | 1,167 | 1,104 | → |
| Martinton | Village | Iroquois | 370 | 381 | 350 | → |
| Maryville | Village | Madison | 4,887 | 7,558 | 7,984 | → |
| Mascoutah | City | St. Clair | 5,679 | 7,509 | 8,029 | → |
| Mason | Town | Effingham | 410 | 345 | 335 | → |
| Mason City | City | Mason | 2,528 | 2,343 | 2,155 | → |
| Matherville | Village | Mercer | 772 | 720 | 670 | → |
| Matteson | Village | Cook / Will | 12,964 | 19,026 | 19,464 | → |
| Mattoon | City | Coles | 18,437 | 18,559 | 17,729 | → |
| Maunie | Village | White | 177 | 139 | 129 | → |
| Maywood | Village | Cook | 26,924 | 24,100 | 23,368 | → |
| Mazon | Village | Grundy | 902 | 1,015 | 977 | → |
| McClure | Village | Alexander | 481 | 402 | 312 | → |
| McCook | Village | Cook | 255 | 228 | 221 | → |
| McCullom Lake | Village | McHenry | 1,012 | 1,049 | 1,010 | → |
| McHenry | City | McHenry | 21,497 | 27,019 | 27,022 | → |
| McLean | Village | McLean | 809 | 830 | 801 | → |
| McLeansboro | City | Hamilton | 2,960 | 2,884 | 2,773 | → |
| McNabb | Village | Putnam | 310 | 285 | 261 | → |
| Mechanicsburg | Village | Sangamon | 464 | 590 | 664 | → |
| Media | Village | Henderson | 134 | 107 | 95 | → |
| Medora | Village | Macoupin / Jersey | 521 | 419 | 396 | → |
| Melrose Park | Village | Cook | 23,144 | 25,414 | 24,925 | → |
| Melvin | Village | Ford | 487 | 452 | 420 | → |
| Mendon | Village | Adams | 1,079 | 973 | 956 | → |
| Mendota | City | LaSalle | 7,279 | 7,373 | 7,057 | → |
| Menominee | Village | Jo Daviess | 226 | 255 | 243 | → |
| Meredosia | Village | Morgan | 1,046 | 1,046 | 980 | → |
| Merrionette Park | Village | Cook | 1,999 | 1,900 | 1,865 | → |
| Metamora | Village | Woodford | 2,782 | 3,671 | 3,713 | → |
| Metcalf | Village | Edgar | 220 | 188 | 175 | → |
| Metropolis | City | Massac | 6,624 | 6,580 | 6,047 | → |
| Mettawa | Village | Lake | 385 | 541 | 551 | → |
| Middletown | Village | Logan | 453 | 322 | 307 | → |
| Midlothian | Village | Cook | 14,428 | 14,815 | 14,476 | → |
| Milan | Village | Rock Island | 5,507 | 5,181 | 5,031 | → |
| Milford | Village | Iroquois | 1,396 | 1,310 | 1,191 | → |
| Mill Creek | Village | Union | 78 | 67 | 65 | → |
| Mill Shoals | Village | White / Wayne | 238 | 215 | 200 | → |
| Millbrook | Village | Kendall | 323 | 310 | 330 | → |
| Milledgeville | Village | Carroll | 1,040 | 1,036 | 955 | → |
| Millington | Village | Kendall / LaSalle | 502 | 669 | 668 | → |
| Millstadt | Village | St. Clair | 2,921 | 4,011 | 3,885 | → |
| Milton | Village | Pike | 287 | 271 | 264 | → |
| Mineral | Village | Bureau | 273 | 237 | 224 | → |
| Minier | Village | Tazewell | 1,247 | 1,252 | 1,195 | → |
| Minonk | City | Woodford | 2,190 | 2,078 | 1,987 | → |
| Minooka | Village | Grundy / Kendall / Will | 4,056 | 10,953 | 11,352 | → |
| Modesto | Village | Macoupin | 247 | 189 | 179 | → |
| Mokena | Village | Will | 14,286 | 18,812 | 20,375 | → |
| Moline | City | Rock Island | 43,561 | 43,519 | 41,902 | → |
| Momence | City | Kankakee | 3,182 | 3,310 | 3,113 | → |
| Monee | Village | Will | 2,951 | 5,146 | 5,122 | → |
| Monmouth | City | Warren | 9,793 | 9,441 | 8,998 | → |
| Monroe Center | Village | Ogle | 494 | 471 | 438 | → |
| Montgomery | Village | Kendall / Kane | 5,686 | 18,306 | 19,749 | → |
| Monticello | City | Piatt | 5,123 | 5,561 | 5,575 | → |
| Montrose | Village | Effingham / Cumberland | 264 | 201 | 198 | → |
| Morris | City | Grundy | 11,941 | 13,638 | 14,918 | → |
| Morrison | City | Whiteside | 4,440 | 4,207 | 4,046 | → |
| Morrisonville | Village | Christian | 1,047 | 1,061 | 1,009 | → |
| Morton | Village | Tazewell | 15,251 | 16,278 | 16,218 | → |
| Morton Grove | Village | Cook | 22,415 | 23,232 | 22,943 | → |
| Mound City | City | Pulaski | 694 | 595 | 519 | → |
| Mound Station | Village | Brown | 124 | 122 | 114 | → |
| Mounds | City | Pulaski | 1,115 | 810 | 704 | → |
| Mount Auburn | Village | Christian | 519 | 480 | 452 | → |
| Mount Carmel | City | Wabash | 8,086 | 7,299 | 7,020 | → |
| Mount Carroll | City | Carroll | 1,862 | 1,717 | 1,578 | → |
| Mount Clare | Village | Macoupin | 413 | 278 | 263 | → |
| Mount Erie | Village | Wayne | 104 | 85 | 83 | → |
| Mount Morris | Village | Ogle | 3,043 | 2,998 | 2,808 | → |
| Mount Olive | City | Macoupin | 2,167 | 2,106 | 1,959 | → |
| Mount Prospect | Village | Cook | 55,712 | 55,037 | 54,198 | → |
| Mount Pulaski | City | Logan | 1,700 | 1,563 | 1,481 | → |
| Mount Sterling | City | Brown | 2,085 | 2,025 | 1,905 | → |
| Mount Vernon | City | Jefferson | 16,331 | 15,265 | 14,849 | → |
| Mount Zion | Village | Macon | 4,880 | 5,842 | 5,805 | → |
| Moweaqua | Village | Shelby / Christian | 1,952 | 1,832 | 1,727 | → |
| Muddy | Village | Saline | 90 | 69 | 64 | → |
| Mulberry Grove | Village | Bond | 676 | 632 | 585 | → |
| Muncie | Village | Vermilion | 157 | 146 | 140 | → |
| Mundelein | Village | Lake | 30,834 | 30,979 | 31,234 | → |
| Murphysboro | City | Jackson | 8,851 | 7,967 | 7,477 | → |
| Murrayville | Village | Morgan | 644 | 587 | 556 | → |
| Naperville | City | DuPage / Will | 128,396 | 142,154 | 148,304 | → |
| Naplate | Village | LaSalle | 510 | 496 | 476 | → |
| Naples | Town | Scott | 137 | 130 | 119 | → |
| Nashville | City | Washington | 3,308 | 3,257 | 3,040 | → |
| Nason | City | Jefferson | 235 | 236 | 231 | → |
| Nauvoo | City | Hancock | 1,045 | 1,149 | 1,065 | → |
| Nebo | Village | Pike | 403 | 340 | 327 | → |
| Nelson | Village | Lee | 165 | 170 | 159 | → |
| Neoga | City | Cumberland | 1,913 | 1,636 | 1,611 | → |
| Neponset | Village | Bureau | 522 | 473 | 441 | → |
| New Athens | Village | St. Clair | 1,985 | 2,058 | 1,904 | → |
| New Baden | Village | St. Clair / Clinton | 2,960 | 3,350 | 3,264 | → |
| New Bedford | Village | Bureau | 100 | 75 | 71 | → |
| New Berlin | Village | Sangamon | 1,052 | 1,346 | 1,327 | → |
| New Boston | City | Mercer | 625 | 683 | 652 | → |
| New Burnside | Village | Johnson | 228 | 211 | 212 | → |
| New Canton | Town | Pike | 420 | 359 | 347 | → |
| New Douglas | Village | Madison | 343 | 319 | 310 | → |
| New Grand Chain | Village | Pulaski | 236 | 210 | 187 | → |
| New Haven | Village | Gallatin / White | 487 | 433 | 393 | → |
| New Holland | Village | Logan | 309 | 282 | 271 | → |
| New Lenox | Village | Will | 17,716 | 24,282 | 26,780 | → |
| New Milford | Village | Winnebago | 539 | 697 | 689 | → |
| New Minden | Village | Washington | 205 | 215 | 208 | → |
| New Salem | Village | Pike | 138 | 137 | 132 | → |
| Newark | Village | Kendall | 890 | 983 | 1,040 | → |
| Newman | City | Douglas | 970 | 863 | 833 | → |
| Newton | City | Jasper | 3,085 | 2,894 | 2,860 | → |
| Niantic | Village | Macon | 736 | 707 | 658 | → |
| Niles | Village | Cook | 29,912 | 29,815 | 29,184 | → |
| Nilwood | Town | Macoupin | 286 | 239 | 229 | → |
| Noble | Village | Richland | 746 | 674 | 652 | → |
| Nokomis | City | Montgomery | 2,375 | 2,256 | 2,126 | → |
| Nora | Village | Jo Daviess | 119 | 121 | 116 | → |
| Normal | Town | McLean | 45,505 | 52,543 | 54,742 | → |
| Norridge | Village | Cook | 14,664 | 14,571 | 14,281 | → |
| Norris | Village | Fulton | 193 | 213 | 205 | → |
| Norris City | Village | White | 1,069 | 1,275 | 1,187 | → |
| North Aurora | Village | Kane | 10,691 | 16,634 | 18,124 | → |
| North Barrington | Village | Lake | 2,871 | 3,017 | 2,970 | → |
| North Chicago | City | Lake | 36,004 | 32,574 | 29,770 | → |
| North City | Village | Franklin | 643 | 588 | 569 | → |
| North Henderson | Village | Mercer | 193 | 187 | 176 | → |
| North Pekin | Village | Tazewell | 1,467 | 1,576 | 1,531 | → |
| North Riverside | Village | Cook | 6,348 | 6,672 | 6,489 | → |
| North Utica | Village | LaSalle | 1,159 | 1,350 | 1,346 | → |
| Northbrook | Village | Cook | 33,478 | 33,202 | 33,167 | → |
| Northfield | Village | Cook | 5,589 | 5,452 | 5,422 | → |
| Northlake | City | Cook | 12,133 | 12,325 | 12,235 | → |
| Norwood | Village | Peoria | 478 | 481 | 465 | → |
| O'Fallon | City | St. Clair | 21,946 | 28,750 | 29,584 | → |
| Oak Brook | Village | Cook / DuPage | 8,436 | 7,883 | 8,074 | → |
| Oak Forest | City | Cook | 28,111 | 27,954 | 27,406 | → |
| Oak Grove | Village | Rock Island | ... | 595 | 589 | → |
| Oak Lawn | Village | Cook | 55,272 | 56,690 | 55,511 | → |
| Oak Park | Village | Cook | 52,518 | 51,878 | 52,265 | → |
| Oakbrook Terrace | City | DuPage | 2,277 | 2,105 | 2,119 | → |
| Oakdale | Village | Washington | 221 | 210 | 202 | → |
| Oakford | Village | Menard | 307 | 286 | 278 | → |
| Oakland | City | Coles | 1,008 | 880 | 858 | → |
| Oakwood | Village | Vermilion | 1,511 | 1,595 | 1,507 | → |
| Oakwood Hills | Village | McHenry | 2,124 | 2,078 | 2,041 | → |
| Oblong | Village | Crawford | 1,565 | 1,466 | 1,378 | → |
| Oconee | Village | Shelby | 202 | 180 | 171 | → |
| Odell | Village | Livingston | 1,017 | 1,046 | 976 | → |
| Odin | Village | Marion | 1,105 | 1,076 | 1,024 | → |
| Ogden | Village | Champaign | 772 | 824 | 811 | → |
| Oglesby | City | LaSalle | 3,605 | 3,791 | 3,587 | → |
| Ohio | Village | Bureau | 542 | 513 | 485 | → |
| Ohlman | Village | Montgomery | 49 | 135 | 125 | → |
| Okawville | Village | Washington | 1,349 | 1,434 | 1,370 | → |
| Old Mill Creek | Village | Lake | 198 | 177 | 173 | → |
| Old Ripley | Village | Bond | 129 | 108 | 103 | → |
| Old Shawneetown | Village | Gallatin | 287 | 192 | 177 | → |
| Olmsted | Village | Pulaski | 353 | 333 | 297 | → |
| Olney | City | Richland | 8,765 | 9,094 | 8,830 | → |
| Olympia Fields | Village | Cook | 4,708 | 4,921 | 4,833 | → |
| Omaha | Village | Gallatin | 263 | 266 | 240 | → |
| Onarga | Village | Iroquois | 1,429 | 1,377 | 1,287 | → |
| Oneida | City | Knox | 764 | 702 | 668 | → |
| Oquawka | Village | Henderson | 1,530 | 1,371 | 1,263 | → |
| Orangeville | Village | Stephenson | 718 | 810 | 756 | → |
| Oreana | Village | Macon | 890 | 878 | 818 | → |
| Oregon | City | Ogle | 3,998 | 3,713 | 3,496 | → |
| Orient | City | Franklin | 307 | 358 | 344 | → |
| Orion | Village | Henry | 1,718 | 1,855 | 1,797 | → |
| Orland Hills | Village | Cook | 6,786 | 7,210 | 7,082 | → |
| Orland Park | Village | Cook / Will | 51,078 | 56,638 | 58,312 | → |
| Oswego | Village | Kendall | 13,330 | 30,452 | 35,237 | → |
| Ottawa | City | LaSalle | 18,586 | 18,804 | 18,128 | → |
| Otterville | Town | Jersey | 120 | 126 | 118 | → |
| Owaneco | Village | Christian | 247 | 239 | 225 | → |
| Palatine | Village | Cook | 66,298 | 68,551 | 68,053 | → |
| Palestine | Village | Crawford | 1,385 | 1,368 | 1,282 | → |
| Palmer | Village | Christian | 251 | 227 | 210 | → |
| Palmyra | Village | Macoupin | 733 | 698 | 666 | → |
| Palos Heights | City | Cook | 11,295 | 12,517 | 12,626 | → |
| Palos Hills | City | Cook | 17,707 | 17,480 | 17,195 | → |
| Palos Park | Village | Cook | 4,721 | 4,849 | 4,778 | → |
| Pana | City | Christian / Shelby | 6,015 | 5,842 | 5,428 | → |
| Panama | Village | Bond / Montgomery | 318 | 343 | 323 | → |
| Panola | Village | Woodford | ... | 51 | 52 | → |
| Papineau | Village | Iroquois | 218 | 171 | 156 | → |
| Paris | City | Edgar | 9,244 | 8,851 | 8,345 | → |
| Park City | City | Lake | 6,650 | 7,569 | 7,457 | → |
| Park Forest | Village | Cook / Will | 23,459 | 21,993 | 21,429 | → |
| Park Ridge | City | Cook | 37,827 | 37,479 | 37,240 | → |
| Parkersburg | Village | Richland | 237 | 208 | 204 | → |
| Patoka | Village | Marion | 634 | 578 | 553 | → |
| Paw Paw | Village | Lee | 862 | 869 | 804 | → |
| Pawnee | Village | Sangamon | 2,635 | 2,739 | 2,651 | → |
| Paxton | City | Ford | 4,621 | 4,506 | 4,229 | → |
| Payson | Village | Adams | 1,068 | 1,025 | 995 | → |
| Pearl | Village | Pike | 184 | 138 | 131 | → |
| Pearl City | Village | Stephenson | 794 | 838 | 788 | → |
| Pecatonica | Village | Winnebago | 2,004 | 2,203 | 2,094 | → |
| Pekin | City | Tazewell / Peoria | 33,980 | 34,095 | 32,255 | → |
| Peoria | City | Peoria | 112,964 | 115,108 | 111,388 | → |
| Peoria Heights | Village | Tazewell / Woodford / Peoria | 6,732 | 6,087 | 5,778 | → |
| Peotone | Village | Will | 3,409 | 4,142 | 4,136 | → |
| Percy | Village | Randolph | 927 | 978 | 927 | → |
| Perry | Village | Pike | 438 | 397 | 385 | → |
| Peru | City | LaSalle | 9,854 | 10,302 | 9,798 | → |
| Pesotum | Village | Champaign | 549 | 551 | 534 | → |
| Petersburg | City | Menard | 2,313 | 2,331 | 2,226 | → |
| Phillipstown | Village | White | 36 | 44 | 41 | → |
| Philo | Village | Champaign | 1,302 | 1,468 | 1,424 | → |
| Phoenix | Village | Cook | 2,205 | 1,974 | 1,925 | → |
| Pierron | Village | Madison / Bond | 634 | 586 | 552 | → |
| Pinckneyville | City | Perry | 5,495 | 5,650 | 5,429 | → |
| Pingree Grove | Village | Kane | 162 | 4,522 | 8,976 | → |
| Piper City | Village | Ford | 812 | 839 | 771 | → |
| Pittsburg | Village | Williamson | 580 | 572 | 558 | → |
| Pittsfield | City | Pike | 4,755 | 4,588 | 4,265 | → |
| Plainfield | Village | Will / Kendall | 13,183 | 39,854 | 44,138 | → |
| Plainville | Village | Adams | 267 | 262 | 251 | → |
| Plano | City | Kendall | 5,674 | 10,846 | 11,670 | → |
| Plattville | Village | Kendall | 225 | 242 | 258 | → |
| Pleasant Hill | Village | Pike | 1,073 | 966 | 928 | → |
| Pleasant Plains | Village | Sangamon | 772 | 802 | 795 | → |
| Plymouth | Village | Hancock / McDonough | 549 | 505 | 471 | → |
| Pocahontas | Village | Bond | 731 | 790 | 744 | → |
| Polo | City | Ogle | 2,470 | 2,355 | 2,198 | → |
| Pontiac | City | Livingston | 11,978 | 11,930 | 11,285 | → |
| Pontoon Beach | Village | Madison | 5,886 | 5,867 | 5,672 | → |
| Pontoosuc | Village | Hancock | 168 | 146 | 137 | → |
| Poplar Grove | Village | Boone | 1,876 | 4,926 | 5,099 | → |
| Port Barrington | Village | Lake / McHenry | 786 | 1,513 | 1,488 | → |
| Port Byron | Village | Rock Island | 1,537 | 1,649 | 1,628 | → |
| Posen | Village | Cook | 4,730 | 5,982 | 5,851 | → |
| Potomac | Village | Vermilion | 698 | 749 | 702 | → |
| Prairie City | Village | McDonough | 450 | 379 | 353 | → |
| Prairie du Rocher | Village | Randolph | 613 | 604 | 561 | → |
| Prairie Grove | Village | McHenry | 986 | 1,909 | 1,866 | → |
| Princeton | City | Bureau | ... | 7,920 | 7,545 | → |
| Princeville | Village | Peoria | 1,661 | 1,741 | 1,677 | → |
| Prophetstown | City | Whiteside | 2,014 | 2,082 | 1,956 | → |
| Prospect Heights | City | Cook | 17,048 | 16,260 | 16,014 | → |
| Pulaski | Village | Pulaski | 273 | 206 | 182 | → |
| Quincy | City | Adams | 40,783 | 40,705 | 40,042 | → |
| Radom | Village | Washington | 222 | 220 | 213 | → |
| Raleigh | Village | Saline | 324 | 350 | 335 | → |
| Ramsey | Village | Fayette | 1,064 | 1,037 | 1,010 | → |
| Rankin | Village | Vermilion | 620 | 561 | 521 | → |
| Ransom | Village | LaSalle | 409 | 384 | 359 | → |
| Rantoul | Village | Champaign | 12,923 | 12,954 | 12,691 | → |
| Rapids City | Village | Rock Island | 942 | 952 | 957 | → |
| Raritan | Village | Henderson | 140 | 138 | 123 | → |
| Raymond | Village | Montgomery | 923 | 1,006 | 948 | → |
| Red Bud | City | Randolph | 3,504 | 3,697 | 3,526 | → |
| Reddick | Village | Livingston / Kankakee | 209 | 166 | 158 | → |
| Redmon | Village | Edgar | 200 | 173 | 159 | → |
| Reynolds | Village | Rock Island / Mercer | 516 | 541 | 513 | → |
| Richmond | Village | McHenry | 1,189 | 1,876 | 1,917 | → |
| Richton Park | Village | Cook | 12,667 | 13,673 | 13,409 | → |
| Richview | Village | Washington | 314 | 261 | 243 | → |
| Ridge Farm | Village | Vermilion | 916 | 887 | 825 | → |
| Ridgway | Village | Gallatin | 988 | 869 | 787 | → |
| Ridott | Village | Stephenson | 161 | 161 | 152 | → |
| Ringwood | Village | McHenry | 512 | 836 | 816 | → |
| Rio | Village | Knox | 230 | 220 | 211 | → |
| Ripley | Village | Brown | 105 | 86 | 82 | → |
| River Forest | Village | Cook | 11,640 | 11,172 | 10,903 | → |
| River Grove | Village | Cook | 10,715 | 10,246 | 9,979 | → |
| Riverdale | Village | Cook | 15,046 | 13,549 | 13,205 | → |
| Riverside | Village | Cook | 8,843 | 8,875 | 8,645 | → |
| Riverton | Village | Sangamon | 3,114 | 3,455 | 3,405 | → |
| Riverwoods | Village | Lake | 3,867 | 3,671 | 3,595 | → |
| Roanoke | Village | Woodford | 2,037 | 2,078 | 1,998 | → |
| Robbins | Village | Cook | 6,559 | 5,337 | 5,464 | → |
| Roberts | Village | Ford | 387 | 362 | 336 | → |
| Robinson | City | Crawford | 8,001 | 7,721 | 7,400 | → |
| Rochelle | City | Ogle | 9,670 | 9,574 | 9,103 | → |
| Rochester | Village | Sangamon | 2,875 | 3,689 | 3,713 | → |
| Rock City | Village | Stephenson | 328 | 304 | 284 | → |
| Rock Falls | City | Whiteside | 9,579 | 9,403 | 8,814 | → |
| Rock Island | City | Rock Island | 39,616 | 39,003 | 37,678 | → |
| Rockbridge | Village | Greene | 192 | 169 | 158 | → |
| Rockdale | Village | Will | 1,878 | 1,987 | 1,931 | → |
| Rockford | City | Winnebago | 151,365 | 153,283 | 146,526 | → |
| Rockton | Village | Winnebago | 5,405 | 7,682 | 7,463 | → |
| Rockwood | Village | Randolph | 53 | 42 | 42 | → |
| Rolling Meadows | City | Cook | 24,565 | 24,095 | 23,748 | → |
| Romeoville | Village | Will | 20,905 | 39,634 | 39,624 | → |
| Roodhouse | City | Greene | 2,228 | 1,814 | 1,688 | → |
| Roscoe | Village | Winnebago | 6,123 | 10,807 | 10,526 | → |
| Rose Hill | Village | Jasper | 73 | 80 | 79 | → |
| Roselle | Village | Cook / DuPage | 23,198 | 22,734 | 22,656 | → |
| Rosemont | Village | Cook | 4,284 | 4,206 | 4,107 | → |
| Roseville | Village | Warren | 1,072 | 989 | 945 | → |
| Rosiclare | City | Hardin | 1,230 | 1,160 | 1,040 | → |
| Rossville | Village | Vermilion | 1,217 | 1,331 | 1,235 | → |
| Round Lake | Village | Lake | 5,819 | 18,336 | 18,278 | → |
| Round Lake Beach | Village | Lake | 26,070 | 28,100 | 27,325 | → |
| Round Lake Heights | Village | Lake | 1,325 | 2,741 | 2,671 | → |
| Round Lake Park | Village | Lake | 6,046 | 7,446 | 7,707 | → |
| Roxana | Village | Madison | 1,564 | 1,540 | 1,450 | → |
| Royal | Village | Champaign | 278 | 293 | 289 | → |
| Royal Lakes | Village | Macoupin | 194 | 197 | 185 | → |
| Royalton | Village | Franklin | 1,129 | 1,151 | 1,120 | → |
| Ruma | Village | Randolph | 283 | 316 | 308 | → |
| Rushville | City | Schuyler | 3,219 | 3,199 | 2,902 | → |
| Russellville | Village | Lawrence | 121 | 94 | 85 | → |
| Rutland | Village | LaSalle | 340 | 318 | 309 | → |
| Sadorus | Village | Champaign | 431 | 416 | 401 | → |
| Sailor Springs | Village | Clay | 128 | 95 | 93 | → |
| Salem | City | Marion | 7,987 | 7,466 | 7,097 | → |
| Sammons Point | Village | Kankakee | 285 | 279 | 265 | → |
| San Jose | Village | Mason / Logan | 711 | 642 | 606 | → |
| Sandoval | Village | Marion | 1,433 | 1,274 | 1,214 | → |
| Sandwich | City | Kendall / DeKalb | 6,526 | 7,420 | 7,370 | → |
| Sauget | Village | St. Clair | 198 | 181 | 166 | → |
| Sauk Village | Village | Cook / Will | 10,335 | 10,553 | 10,346 | → |
| Saunemin | Village | Livingston | 438 | 429 | 405 | → |
| Savanna | City | Carroll | 3,529 | 3,062 | 2,798 | → |
| Savoy | Village | Champaign | 4,554 | 7,296 | 8,418 | → |
| Sawyerville | Village | Macoupin | 281 | 279 | 266 | → |
| Saybrook | Village | McLean | 760 | 693 | 674 | → |
| Scales Mound | Village | Jo Daviess | 391 | 386 | 356 | → |
| Schaumburg | Village | Cook / DuPage | 75,390 | 74,229 | 73,509 | → |
| Schiller Park | Village | Cook | 11,791 | 11,793 | 11,515 | → |
| Schram City | Village | Montgomery | 647 | 586 | 553 | → |
| Sciota | Village | McDonough | 57 | 61 | 57 | → |
| Scottville | Village | Macoupin | 143 | 116 | 111 | → |
| Seaton | Village | Mercer | 245 | 222 | 204 | → |
| Seatonville | Village | Bureau | 303 | 314 | 300 | → |
| Secor | Village | Woodford | 382 | 376 | 355 | → |
| Seneca | Village | Grundy / LaSalle | 2,164 | 2,365 | 2,261 | → |
| Sesser | City | Franklin | 2,105 | 1,932 | 1,875 | → |
| Shabbona | Village | DeKalb | 970 | 927 | 915 | → |
| Shannon | Village | Carroll | 848 | 755 | 690 | → |
| Shawneetown | City | Gallatin | 1,410 | 1,244 | 1,129 | → |
| Sheffield | Village | Bureau | 950 | 924 | 872 | → |
| Shelbyville | City | Shelby | 5,024 | 4,694 | 4,542 | → |
| Sheldon | Village | Iroquois | 1,240 | 1,070 | 976 | → |
| Sheridan | Village | LaSalle | 2,429 | 2,136 | 2,529 | → |
| Sherman | Village | Sangamon | 2,885 | 4,148 | 4,684 | → |
| Sherrard | Village | Mercer | 712 | 640 | 598 | → |
| Shiloh | Village | St. Clair | 8,625 | 12,541 | 13,109 | → |
| Shipman | Town | Macoupin | 660 | 624 | 594 | → |
| Shorewood | Village | Will | 7,958 | 15,638 | 17,385 | → |
| Shumway | Village | Effingham | 225 | 201 | 197 | → |
| Sibley | Village | Ford | 335 | 279 | 259 | → |
| Sidell | Village | Vermilion | 623 | 617 | 575 | → |
| Sidney | Village | Champaign | 1,117 | 1,241 | 1,207 | → |
| Sigel | Town | Shelby | 384 | 373 | 357 | → |
| Silvis | City | Rock Island | 7,385 | 7,523 | 7,537 | → |
| Simpson | Village | Johnson | 58 | 60 | 60 | → |
| Sims | Village | Wayne | 280 | 252 | 247 | → |
| Skokie | Village | Cook | 63,274 | 64,845 | 63,280 | → |
| Sleepy Hollow | Village | Kane | 3,567 | 3,304 | 3,277 | → |
| Smithboro | Village | Bond | 203 | 182 | 167 | → |
| Smithfield | Village | Fulton | 234 | 230 | 223 | → |
| Smithton | Village | St. Clair | 2,374 | 3,743 | 3,826 | → |
| Somonauk | Village | DeKalb / LaSalle | 1,465 | 1,902 | 1,873 | → |
| Sorento | Village | Bond | 591 | 512 | 475 | → |
| South Barrington | Village | Cook | 3,770 | 4,570 | 4,993 | → |
| South Beloit | City | Winnebago | 5,409 | 7,893 | 7,664 | → |
| South Chicago Heights | Village | Cook | 3,974 | 4,143 | 4,042 | → |
| South Elgin | Village | Kane | 16,049 | 21,988 | 23,447 | → |
| South Holland | Village | Cook | 22,420 | 22,014 | 21,503 | → |
| South Jacksonville | Village | Morgan | 3,454 | 3,331 | 3,139 | → |
| South Pekin | Village | Tazewell | 1,154 | 1,146 | 1,094 | → |
| South Roxana | Village | Madison | 1,881 | 2,086 | 2,001 | → |
| South Wilmington | Village | Grundy | 654 | 681 | 648 | → |
| Southern View | Village | Sangamon | 1,745 | 1,661 | 1,582 | → |
| Sparland | Village | Marshall | 510 | 406 | 372 | → |
| Sparta | City | Randolph | 4,602 | 4,302 | 4,326 | → |
| Spaulding | Village | Sangamon | 647 | 873 | 861 | → |
| Spillertown | Village | Williamson | 212 | 203 | 198 | → |
| Spring Bay | Village | Woodford | 435 | 476 | 467 | → |
| Spring Grove | Village | McHenry | 3,858 | 5,764 | 5,709 | → |
| Spring Valley | City | Bureau | 5,468 | 5,560 | 5,199 | → |
| Springerton | Village | White | 134 | 110 | 102 | → |
| Springfield | City | Sangamon | 112,514 | 116,998 | 114,694 | → |
| St. Anne | Village | Kankakee | 1,226 | 1,259 | 1,179 | → |
| St. Augustine | Village | Knox | 148 | 122 | 114 | → |
| St. Charles | City | DuPage / Kane | 27,943 | 32,321 | 33,032 | → |
| St. David | Village | Fulton | 598 | 590 | 538 | → |
| St. Elmo | City | Fayette | 1,459 | 1,446 | 1,395 | → |
| St. Francisville | City | Lawrence | 764 | 697 | 628 | → |
| St. Jacob | Village | Madison | 977 | 1,103 | 1,266 | → |
| St. Johns | Village | Perry | 236 | 219 | 207 | → |
| St. Joseph | Village | Champaign | 2,895 | 3,990 | 3,928 | → |
| St. Libory | Village | St. Clair | 583 | 611 | 606 | → |
| St. Peter | Village | Fayette | 386 | 355 | 342 | → |
| St. Rose | Village | Clinton | ... | 403 | 407 | → |
| Standard | Village | Putnam | 259 | 222 | 205 | → |
| Standard City | Village | Macoupin | 136 | 152 | 147 | → |
| Stanford | Village | McLean | 698 | 601 | 588 | → |
| Staunton | City | Macoupin | 5,158 | 5,232 | 4,972 | → |
| Ste. Marie | Village | Jasper | 266 | 244 | 240 | → |
| Steeleville | Village | Randolph | 2,057 | 2,083 | 1,947 | → |
| Steger | Village | Cook / Will | 9,641 | 9,567 | 9,331 | → |
| Sterling | City | Whiteside | 15,951 | 15,440 | 14,609 | → |
| Steward | Village | Lee | 271 | 256 | 240 | → |
| Stewardson | Village | Shelby | 758 | 732 | 721 | → |
| Stickney | Village | Cook | 6,150 | 6,786 | 6,620 | → |
| Stillman Valley | Village | Ogle | 1,036 | 1,120 | 1,059 | → |
| Stockton | Village | Jo Daviess | 1,937 | 1,869 | 1,724 | → |
| Stone Park | Village | Cook | 5,098 | 4,946 | 4,844 | → |
| Stonefort | Village | Williamson / Saline | 292 | 297 | 286 | → |
| Stonington | Village | Christian | 960 | 933 | 855 | → |
| Stoy | Village | Crawford | ... | 123 | 116 | → |
| Strasburg | Village | Shelby | 595 | 467 | 442 | → |
| Strawn | Village | Livingston | 105 | 100 | 94 | → |
| Streamwood | Village | Cook | 36,490 | 39,839 | 39,570 | → |
| Streator | City | Livingston / LaSalle | 14,057 | 14,009 | 13,196 | → |
| Stronghurst | Village | Henderson | 893 | 883 | 796 | → |
| Sublette | Village | Lee | 456 | 449 | 423 | → |
| Sugar Grove | Village | Kane | 3,977 | 9,004 | 9,803 | → |
| Sullivan | City | Moultrie | 4,363 | 4,448 | 4,483 | → |
| Summerfield | Village | St. Clair | 483 | 431 | 398 | → |
| Summit | Village | Cook | 10,637 | 11,054 | 11,188 | → |
| Sumner | City | Lawrence | 1,011 | 3,174 | 2,973 | → |
| Sun River Terrace | Village | Kankakee | 435 | 528 | 499 | → |
| Swansea | Village | St. Clair | 11,048 | 13,445 | 13,449 | → |
| Sycamore | City | DeKalb | 12,075 | 17,521 | 18,083 | → |
| Symerton | Village | Will | 112 | 93 | 94 | → |
| Table Grove | Village | Fulton | 389 | 416 | 384 | → |
| Tallula | Village | Menard | 638 | 488 | 474 | → |
| Tamaroa | Village | Perry | 760 | 638 | 599 | → |
| Tamms | Village | Alexander | ... | 1,043 | 494 | → |
| Tampico | Village | Whiteside | 776 | 790 | 735 | → |
| Taylor Springs | Village | Montgomery | 576 | 690 | 658 | → |
| Taylorville | City | Christian | 12,584 | 11,275 | 10,491 | → |
| Tennessee | Village | McDonough | 147 | 115 | 107 | → |
| Teutopolis | Village | Effingham | 1,567 | 1,543 | 1,626 | → |
| Thawville | Village | Iroquois | 254 | 241 | 250 | → |
| Thayer | Village | Sangamon | 771 | 693 | 662 | → |
| Thebes | Village | Alexander | 455 | 437 | 337 | → |
| Third Lake | Village | Lake | 1,337 | 1,177 | 1,156 | → |
| Thomasboro | Village | Champaign | 1,219 | 1,121 | 1,097 | → |
| Thompsonville | Village | Franklin | 559 | 543 | 525 | → |
| Thomson | Village | Carroll | 560 | 590 | 553 | → |
| Thornton | Village | Cook | 2,516 | 2,386 | 2,419 | → |
| Tilden | Village | Randolph | 913 | 934 | 894 | → |
| Tilton | Village | Vermilion | 3,039 | 2,721 | 2,647 | → |
| Timberlane | Village | Boone | 249 | 934 | 948 | → |
| Time | Village | Pike | 29 | 23 | 22 | → |
| Tinley Park | Village | Cook / Will | 48,741 | 56,836 | 56,204 | → |
| Tiskilwa | Village | Bureau | 795 | 831 | 772 | → |
| Toledo | Village | Cumberland | 1,224 | 1,229 | 1,200 | → |
| Tolono | Village | Champaign | 2,740 | 3,458 | 3,449 | → |
| Toluca | City | Marshall | 1,343 | 1,414 | 1,282 | → |
| Tonica | Village | LaSalle | 675 | 768 | 722 | → |
| Topeka | Village | Mason | 89 | 76 | 71 | → |
| Toulon | City | Stark | 1,388 | 1,292 | 1,177 | → |
| Tovey | Village | Christian | 524 | 512 | 480 | → |
| Towanda | Village | McLean | 505 | 480 | 464 | → |
| Tower Hill | Village | Shelby | 615 | 611 | 585 | → |
| Tower Lakes | Village | Lake | 1,248 | 1,278 | 1,235 | → |
| Tremont | Village | Tazewell | 2,033 | 2,236 | 2,118 | → |
| Trenton | City | Clinton | 2,582 | 2,715 | 2,607 | → |
| Trout Valley | Village | McHenry | 574 | 537 | 521 | → |
| Troy | City | Madison | 8,493 | 9,948 | 10,302 | → |
| Troy Grove | Village | LaSalle | 292 | 250 | 240 | → |
| Tuscola | City | Douglas | 4,431 | 4,479 | 4,352 | → |
| Ullin | Village | Pulaski | 788 | 463 | 409 | → |
| Union | Village | McHenry | 577 | 580 | 556 | → |
| Union Hill | Village | Kankakee | 61 | 58 | 55 | → |
| University Park | Village | Cook / Will | 6,661 | 7,119 | 6,958 | → |
| Urbana | City | Champaign | 37,075 | 41,675 | 42,046 | → |
| Ursa | Village | Adams | 602 | 628 | 608 | → |
| Valier | Village | Franklin | 665 | 669 | 641 | → |
| Valley City | Village | Pike | 11 | 13 | 12 | → |
| Valmeyer | Village | Monroe | 612 | 1,250 | 1,245 | → |
| Vandalia | City | Fayette | 7,027 | 7,037 | 6,703 | → |
| Varna | Village | Marshall | 425 | 384 | 350 | → |
| Venedy | Village | Washington | 137 | 138 | 133 | → |
| Venice | City | Madison | 2,538 | 1,890 | 1,878 | → |
| Vergennes | Village | Jackson | 330 | 298 | 282 | → |
| Vermilion | Village | Edgar | 242 | 225 | 207 | → |
| Vermont | Village | Fulton | 777 | 667 | 645 | → |
| Vernon | Village | Marion | 192 | 129 | 123 | → |
| Vernon Hills | Village | Lake | 20,101 | 25,030 | 26,641 | → |
| Verona | Village | Grundy | 253 | 215 | 207 | → |
| Versailles | Village | Brown | 569 | 478 | 457 | → |
| Victoria | Village | Knox | 333 | 316 | 293 | → |
| Vienna | City | Johnson | 1,247 | 1,430 | 1,442 | → |
| Villa Grove | City | Douglas | 2,534 | 2,537 | 2,426 | → |
| Villa Park | Village | DuPage | 22,474 | 22,026 | 21,695 | → |
| Viola | Village | Mercer | 947 | 955 | 896 | → |
| Virden | City | Sangamon / Macoupin | 3,420 | 3,525 | 3,354 | → |
| Virgil | Village | Kane | 337 | 329 | 331 | → |
| Virginia | City | Cass | 1,735 | 1,615 | 1,452 | → |
| Volo | Village | Lake | 226 | 2,906 | 5,580 | → |
| Wadsworth | Village | Lake | 3,447 | 3,751 | 3,681 | → |
| Waggoner | Village | Montgomery | 244 | 266 | 254 | → |
| Walnut | Village | Bureau | 1,456 | 1,418 | 1,323 | → |
| Walnut Hill | Village | Marion | 109 | 108 | 103 | → |
| Walshville | Village | Montgomery | 89 | 64 | 62 | → |
| Waltonville | Village | Jefferson | 414 | 445 | 432 | → |
| Wamac | City | Washington / Marion / Clinton | 1,375 | 1,182 | 1,127 | → |
| Wapella | Village | De Witt | 645 | 558 | 531 | → |
| Warren | Village | Jo Daviess | 1,501 | 1,428 | 1,314 | → |
| Warrensburg | Village | Macon | 1,287 | 1,213 | 1,134 | → |
| Warrenville | City | DuPage | 13,465 | 13,182 | 13,260 | → |
| Warsaw | City | Hancock | 1,798 | 1,607 | 1,490 | → |
| Washburn | Village | Woodford / Marshall | 1,155 | 1,149 | 1,083 | → |
| Washington | City | Tazewell | 11,547 | 15,206 | 16,704 | → |
| Washington Park | Village | St. Clair | 5,932 | 4,196 | 3,906 | → |
| Wataga | Village | Knox | 872 | 843 | 793 | → |
| Waterloo | City | Monroe | 8,110 | 9,982 | 10,456 | → |
| Waterman | Village | DeKalb | 1,242 | 1,515 | 1,491 | → |
| Watseka | City | Iroquois | 5,715 | 5,294 | 4,860 | → |
| Watson | Village | Effingham | 758 | 754 | 740 | → |
| Wauconda | Village | Lake | 9,461 | 13,630 | 13,620 | → |
| Waukegan | City | Lake | 87,925 | 89,072 | 86,792 | → |
| Waverly | City | Morgan | 1,352 | 1,297 | 1,210 | → |
| Wayne | Village | DuPage / Kane | 2,176 | 2,411 | 2,425 | → |
| Wayne City | Village | Wayne | 1,102 | 1,029 | 1,009 | → |
| Waynesville | Village | De Witt | 450 | 428 | 412 | → |
| Weldon | Village | De Witt | 441 | 429 | 413 | → |
| Wellington | Village | Iroquois | 258 | 242 | 219 | → |
| Wenona | City | Marshall / LaSalle | 1,052 | 1,056 | 951 | → |
| Wenonah | Village | Montgomery | 44 | 37 | 35 | → |
| West Brooklyn | Village | Lee | 174 | 142 | 133 | → |
| West Chicago | City | DuPage | 23,491 | 27,221 | 27,045 | → |
| West City | Village | Franklin | 729 | 661 | 642 | → |
| West Dundee | Village | Kane | 5,420 | 7,331 | 8,258 | → |
| West Frankfort | City | Franklin | 8,317 | 8,181 | 7,882 | → |
| West Peoria | City | Peoria | 4,787 | 4,699 | 4,508 | → |
| West Point | Village | Hancock | 196 | 178 | 167 | → |
| West Salem | Village | Edwards | 1,011 | 897 | 853 | → |
| Westchester | Village | Cook | 16,816 | 16,718 | 16,279 | → |
| Western Springs | Village | Cook | 12,467 | 12,948 | 13,404 | → |
| Westfield | Village | Clark | 678 | 601 | 561 | → |
| Westmont | Village | DuPage | 25,081 | 24,659 | 24,647 | → |
| Westville | Village | Vermilion | 3,172 | 3,202 | 2,990 | → |
| Wheaton | City | DuPage | 55,339 | 53,014 | 53,150 | → |
| Wheeler | Village | Jasper | 131 | 147 | 148 | → |
| Wheeling | Village | Lake / Cook | 36,256 | 37,642 | 38,878 | → |
| White City | Village | Macoupin | 207 | 232 | 230 | → |
| White Hall | City | Greene | 2,637 | 2,520 | 2,346 | → |
| Williamsfield | Village | Knox | 607 | 578 | 550 | → |
| Williamson | Village | Madison | 255 | 230 | 219 | → |
| Williamsville | Village | Sangamon | 1,438 | 1,476 | 1,491 | → |
| Willisville | Village | Perry | 711 | 633 | 597 | → |
| Willow Hill | Village | Jasper | 251 | 230 | 228 | → |
| Willow Springs | Village | Cook | 4,954 | 5,747 | 5,668 | → |
| Willowbrook | Village | DuPage | 8,766 | 8,542 | 8,493 | → |
| Wilmette | Village | Cook | 27,605 | 27,057 | 27,265 | → |
| Wilmington | Village | Greene | 131 | 142 | 135 | → |
| Wilmington | City | Will | 5,198 | 5,807 | 5,742 | → |
| Wilsonville | Village | Macoupin | 606 | 586 | 559 | → |
| Winchester | City | Scott | 1,665 | 1,593 | 1,458 | → |
| Windsor | Village | Mercer | 722 | 748 | 782 | → |
| Windsor | City | Shelby | 1,179 | 1,187 | 1,154 | → |
| Winfield | Village | DuPage | 8,862 | 9,092 | 9,690 | → |
| Winnebago | Village | Winnebago | 2,965 | 3,101 | 2,978 | → |
| Winnetka | Village | Cook | 12,584 | 12,192 | 12,385 | → |
| Winslow | Village | Stephenson | 343 | 336 | 313 | → |
| Winthrop Harbor | Village | Lake | 6,717 | 6,869 | 6,673 | → |
| Witt | City | Montgomery | 991 | 903 | 853 | → |
| Wonder Lake | Village | McHenry | 2,882 | 4,014 | 3,884 | → |
| Wood Dale | City | DuPage | 13,539 | 13,769 | 13,717 | → |
| Wood River | City | Madison | 11,270 | 10,623 | 10,163 | → |
| Woodhull | Village | Henry | 810 | 811 | 779 | → |
| Woodland | Village | Iroquois | 321 | 324 | 306 | → |
| Woodlawn | Village | Jefferson | 736 | 696 | 678 | → |
| Woodridge | Village | DuPage / Will | 30,875 | 32,980 | 33,566 | → |
| Woodson | Village | Morgan | 550 | 513 | 490 | → |
| Woodstock | City | McHenry | 20,096 | 24,759 | 25,268 | → |
| Worden | Village | Madison | 896 | 1,070 | 1,048 | → |
| Worth | Village | Cook | 10,880 | 10,789 | 10,563 | → |
| Wyanet | Village | Bureau | 1,024 | 985 | 931 | → |
| Wyoming | City | Stark | 1,452 | 1,429 | 1,295 | → |
| Xenia | Village | Clay | 401 | 382 | 364 | → |
| Yale | Village | Jasper | 105 | 86 | 83 | → |
| Yates City | Village | Knox | 729 | 691 | 657 | → |
| Yorkville | City | Kendall | 6,451 | 16,938 | 20,119 | → |
| Zeigler | City | Franklin | 1,669 | 1,801 | 1,725 | → |
| Zion | City | Lake | 23,312 | 24,400 | 23,705 | → |
Source: U.S. Census Bureau (web).
Explanation: Places: 2000 population in the boundaries of 2010 and later population figures in the boundaries of 2018.