All counties in the State of Illinois.
| Name | Status | Population census 2000-04-01 | Population census 2010-04-01 | Population estimate 2012-07-01 | |
|---|---|---|---|---|---|
| Adams | County | 68,261 | 67,103 | 67,197 | o |
| Alexander | County | 9,583 | 8,238 | 7,748 | o |
| Bond | County | 17,636 | 17,768 | 17,644 | o |
| Boone | County | 41,788 | 54,167 | 53,940 | o |
| Brown | County | 6,952 | 6,937 | 6,914 | o |
| Bureau | County | 35,496 | 34,978 | 34,323 | o |
| Calhoun | County | 5,079 | 5,089 | 5,014 | o |
| Carroll | County | 16,671 | 15,388 | 15,011 | o |
| Cass | County | 13,691 | 13,642 | 13,338 | o |
| Champaign | County | 179,687 | 201,081 | 203,276 | o |
| Christian | County | 35,380 | 34,800 | 34,638 | o |
| Clark | County | 16,995 | 16,335 | 16,209 | o |
| Clay | County | 14,417 | 13,815 | 13,766 | o |
| Clinton | County | 35,536 | 37,762 | 38,061 | o |
| Coles | County | 53,210 | 53,873 | 53,655 | o |
| Cook | County | 5,376,741 | 5,194,675 | 5,231,351 | o |
| Crawford | County | 20,460 | 19,817 | 19,600 | o |
| Cumberland | County | 11,311 | 11,048 | 10,968 | o |
| De Witt (DeWitt) | County | 16,802 | 16,561 | 16,434 | o |
| DeKalb | County | 88,941 | 105,160 | 104,704 | o |
| Douglas | County | 19,909 | 19,980 | 19,853 | o |
| DuPage | County | 904,594 | 916,924 | 927,987 | o |
| Edgar | County | 19,643 | 18,576 | 18,191 | o |
| Edwards | County | 6,978 | 6,721 | 6,684 | o |
| Effingham | County | 34,267 | 34,242 | 34,353 | o |
| Fayette | County | 21,810 | 22,140 | 22,014 | o |
| Ford | County | 14,227 | 14,081 | 14,008 | o |
| Franklin | County | 39,021 | 39,556 | 39,407 | o |
| Fulton | County | 38,244 | 37,069 | 36,651 | o |
| Gallatin | County | 6,426 | 5,589 | 5,430 | o |
| Greene | County | 14,766 | 13,886 | 13,576 | o |
| Grundy | County | 37,528 | 50,063 | 50,281 | o |
| Hamilton | County | 8,613 | 8,457 | 8,370 | o |
| Hancock | County | 20,171 | 19,104 | 18,891 | o |
| Hardin | County | 4,793 | 4,320 | 4,258 | o |
| Henderson | County | 8,176 | 7,331 | 7,043 | o |
| Henry | County | 51,032 | 50,486 | 50,155 | o |
| Iroquois | County | 31,340 | 29,718 | 29,240 | o |
| Jackson | County | 59,607 | 60,218 | 60,071 | o |
| Jasper | County | 10,113 | 9,698 | 9,614 | o |
| Jefferson | County | 40,051 | 38,827 | 38,720 | o |
| Jersey | County | 21,649 | 22,985 | 22,742 | o |
| Jo Daviess | County | 22,296 | 22,677 | 22,549 | o |
| Johnson | County | 12,877 | 12,582 | 12,760 | o |
| Kane | County | 404,508 | 515,269 | 522,487 | o |
| Kankakee | County | 103,825 | 113,449 | 113,040 | o |
| Kendall | County | 54,539 | 114,736 | 118,105 | o |
| Knox | County | 55,842 | 52,919 | 52,247 | o |
| La Salle | County | 111,599 | 113,924 | 112,973 | o |
| Lake | County | 644,682 | 703,360 | 702,120 | o |
| Lawrence | County | 15,449 | 16,833 | 16,604 | o |
| Lee | County | 36,062 | 36,031 | 35,037 | o |
| Livingston | County | 39,734 | 38,950 | 38,647 | o |
| Logan | County | 31,199 | 30,305 | 30,013 | o |
| Macon | County | 114,690 | 110,768 | 110,122 | o |
| Macoupin | County | 49,008 | 47,765 | 47,231 | o |
| Madison | County | 259,019 | 269,282 | 267,883 | o |
| Marion | County | 41,678 | 39,437 | 38,894 | o |
| Marshall | County | 13,159 | 12,640 | 12,327 | o |
| Mason | County | 16,034 | 14,666 | 14,327 | o |
| Massac | County | 15,163 | 15,429 | 15,234 | o |
| McDonough | County | 32,906 | 32,612 | 32,537 | o |
| McHenry | County | 259,524 | 308,862 | 308,145 | o |
| McLean | County | 150,384 | 169,572 | 172,281 | o |
| Menard | County | 12,483 | 12,705 | 12,722 | o |
| Mercer | County | 16,940 | 16,434 | 16,219 | o |
| Monroe | County | 27,625 | 32,957 | 33,357 | o |
| Montgomery | County | 30,646 | 30,104 | 29,620 | o |
| Morgan | County | 36,627 | 35,547 | 35,272 | o |
| Moultrie | County | 14,288 | 14,846 | 14,933 | o |
| Ogle | County | 51,001 | 53,497 | 52,848 | o |
| Peoria | County | 183,466 | 186,494 | 187,254 | o |
| Perry | County | 23,091 | 22,350 | 22,058 | o |
| Piatt | County | 16,385 | 16,729 | 16,504 | o |
| Pike | County | 17,362 | 16,430 | 16,308 | o |
| Pope | County | 4,397 | 4,470 | 4,272 | o |
| Pulaski | County | 7,333 | 6,161 | 5,998 | o |
| Putnam | County | 6,077 | 6,006 | 5,886 | o |
| Randolph | County | 33,897 | 33,476 | 32,956 | o |
| Richland | County | 16,291 | 16,233 | 16,176 | o |
| Rock Island | County | 149,390 | 147,546 | 147,457 | o |
| Saline | County | 26,752 | 24,913 | 24,946 | o |
| Sangamon | County | 188,974 | 197,465 | 199,271 | o |
| Schuyler | County | 7,181 | 7,544 | 7,457 | o |
| Scott | County | 5,539 | 5,355 | 5,290 | o |
| Shelby | County | 22,884 | 22,363 | 22,196 | o |
| St. Clair | County | 256,043 | 270,056 | 268,858 | o |
| Stark | County | 6,330 | 5,994 | 5,946 | o |
| Stephenson | County | 48,995 | 47,711 | 46,959 | o |
| Tazewell | County | 128,465 | 135,394 | 135,949 | o |
| Union | County | 18,311 | 17,808 | 17,647 | o |
| Vermilion | County | 83,929 | 81,625 | 80,727 | o |
| Wabash | County | 12,932 | 11,947 | 11,727 | o |
| Warren | County | 18,736 | 17,707 | 17,731 | o |
| Washington | County | 15,150 | 14,716 | 14,598 | o |
| Wayne | County | 17,149 | 16,760 | 16,574 | o |
| White | County | 15,381 | 14,665 | 14,568 | o |
| Whiteside | County | 60,662 | 58,498 | 57,846 | o |
| Will | County | 502,211 | 677,560 | 682,518 | o |
| Williamson | County | 61,300 | 66,362 | 66,674 | o |
| Winnebago | County | 278,441 | 295,264 | 292,069 | o |
| Woodford | County | 35,491 | 38,664 | 38,971 | o |
| Illinois | Federal State | 12,419,927 | 12,830,632 | 12,875,255 |
All incorporated places in the State of Illinois.
| Name | Status | County | Population census 2000-04-01 | Population census 2010-04-01 | Population estimate 2012-07-01 | |
|---|---|---|---|---|---|---|
| Abingdon | City | Knox | 3,567 | 3,286 | 3,241 | o |
| Addieville | Village | Washington | 267 | 252 | 249 | o |
| Addison | Village | DuPage | 36,084 | 36,966 | 37,287 | o |
| Adeline | Village | Ogle | 139 | 85 | 84 | o |
| Albany | Village | Whiteside | 896 | 891 | 881 | o |
| Albers | Village | Clinton | 896 | 1,190 | 1,189 | o |
| Albion | City | Edwards | 2,022 | 1,988 | 1,978 | o |
| Aledo | City | Mercer | 3,624 | 3,644 | 3,585 | o |
| Alexis | Village | Warren/Mercer | 875 | 831 | 823 | o |
| Algonquin | Village | Kane/McHenry | 23,452 | 30,046 | 30,004 | o |
| Alhambra | Village | Madison | 639 | 681 | 673 | o |
| Allendale | Village | Wabash | 519 | 475 | 469 | o |
| Allenville | Village | Moultrie | 154 | 148 | 148 | o |
| Allerton | Village | Vermilion/Champaign | 292 | 291 | 289 | o |
| Alma | Village | Marion | 385 | 320 | 317 | o |
| Alorton | Village | St. Clair | 2,664 | 2,002 | 1,964 | o |
| Alpha | Village | Henry | 725 | 671 | 664 | o |
| Alsey | Village | Scott | 243 | 227 | 225 | o |
| Alsip | Village | Cook | 19,657 | 19,277 | 19,419 | o |
| Altamont | City | Effingham | 2,319 | 2,319 | 2,311 | o |
| Alto Pass | Village | Union | 392 | 391 | 388 | o |
| Alton | City | Madison | 30,332 | 27,865 | 27,415 | o |
| Altona | Village | Knox | 554 | 529 | 522 | o |
| Alvan | Village | Vermilion | 313 | 270 | 268 | o |
| Amboy | City | Lee | 2,637 | 2,500 | 2,416 | o |
| Anchor | Village | McLean | 166 | 146 | 147 | o |
| Andalusia | Village | Rock Island | 1,144 | 1,178 | 1,201 | o |
| Andover | Village | Henry | 593 | 578 | 575 | o |
| Anna | City | Union | 5,202 | 4,444 | 4,392 | o |
| Annawan | Town | Henry/Bureau | 859 | 878 | 872 | o |
| Antioch | Village | Lake | 8,793 | 14,444 | 14,409 | o |
| Apple River | Village | Jo Daviess | 384 | 366 | 364 | o |
| Arcola | City | Douglas | 2,838 | 2,916 | 2,894 | o |
| Arenzville | Village | Cass | 415 | 409 | 402 | o |
| Argenta | Village | Macon | 948 | 947 | 940 | o |
| Arlington | Village | Bureau | 210 | 193 | 190 | o |
| Arlington Heights | Village | Lake/Cook | 76,624 | 75,101 | 75,777 | o |
| Armington | Village | Tazewell | 369 | 343 | 344 | o |
| Aroma Park | Village | Kankakee | 770 | 741 | 735 | o |
| Arrowsmith | Village | McLean | 294 | 294 | 296 | o |
| Arthur | Village | Moultrie/Douglas | 2,216 | 2,288 | 2,282 | o |
| Ashkum | Village | Iroquois | 717 | 761 | 754 | o |
| Ashland | Village | Cass | 1,361 | 1,333 | 1,302 | o |
| Ashley | City | Washington | 625 | 536 | 525 | o |
| Ashmore | Village | Coles | 811 | 785 | 780 | o |
| Ashton | Village | Lee | 1,122 | 972 | 939 | o |
| Assumption | City | Christian | 1,256 | 1,168 | 1,156 | o |
| Astoria | Town | Fulton | 1,174 | 1,141 | 1,126 | o |
| Athens | City | Menard | 1,736 | 1,988 | 1,983 | o |
| Atkinson | Town | Henry | 994 | 972 | 966 | o |
| Atlanta | City | Logan | 1,656 | 1,692 | 1,682 | o |
| Atwood | Village | Piatt/Douglas | 1,316 | 1,224 | 1,211 | o |
| Auburn | City | Sangamon | 4,461 | 4,812 | 4,826 | o |
| Augusta | Village | Hancock | 679 | 587 | 579 | o |
| Aurora | City | Kendall/DuPage/Kane/Will | 143,002 | 197,850 | 199,932 | o |
| Ava | City | Jackson | 663 | 654 | 647 | o |
| Aviston | Village | Clinton | 1,242 | 1,945 | 2,035 | o |
| Avon | Village | Fulton/Warren | 945 | 799 | 787 | o |
| Baldwin | Village | Randolph | 435 | 373 | 361 | o |
| Banner | Village | Fulton | 215 | 189 | 187 | o |
| Bannockburn | Village | Lake | 1,438 | 1,583 | 1,579 | o |
| Bardolph | Village | McDonough | 279 | 251 | 251 | o |
| Barrington | Village | Lake/Cook | 10,132 | 10,327 | 10,351 | o |
| Barrington Hills | Village | Lake/Cook/Kane/McHenry | 3,943 | 4,209 | 4,225 | o |
| Barry | City | Pike | 1,411 | 1,318 | 1,310 | o |
| Bartelso | Village | Clinton | 590 | 595 | 600 | o |
| Bartlett | Village | Cook/DuPage/Kane | 36,560 | 41,226 | 41,618 | o |
| Bartonville | Village | Peoria | 6,322 | 6,471 | 6,444 | o |
| Basco | Village | Hancock | 97 | 98 | 97 | o |
| Batavia | City | DuPage/Kane | 23,839 | 26,045 | 26,318 | o |
| Batchtown | Village | Calhoun | 224 | 214 | 211 | o |
| Bath | Village | Mason | 342 | 333 | 322 | o |
| Bay View Gardens | Village | Woodford | 377 | 378 | 378 | o |
| Baylis | Village | Pike | 269 | 205 | 204 | o |
| Beach Park | Village | Lake | 10,421 | 13,711 | 13,789 | o |
| Beardstown | City | Cass | 5,807 | 6,123 | 5,972 | o |
| Beaverville | Village | Iroquois | 394 | 362 | 354 | o |
| Beckemeyer | Village | Clinton | 1,075 | 1,040 | 1,034 | o |
| Bedford Park | Village | Cook | 561 | 580 | 580 | o |
| Beecher | Village | Will | 2,205 | 4,359 | 4,434 | o |
| Beecher City | Village | Effingham | 493 | 463 | 456 | o |
| Belgium | Village | Vermilion | 455 | 404 | 402 | o |
| Belknap | Village | Johnson | 133 | 104 | 106 | o |
| Belle Prairie City | Town | Hamilton | 60 | 54 | 54 | o |
| Belle Rive | Village | Jefferson | 364 | 361 | 362 | o |
| Belleville | City | St. Clair | 42,183 | 44,490 | 43,765 | o |
| Bellevue | Village | Peoria | 1,839 | 1,984 | 1,980 | o |
| Bellflower | Village | McLean | 393 | 360 | 358 | o |
| Bellmont | Village | Wabash | 296 | 276 | 273 | o |
| Bellwood | Village | Cook | 20,535 | 19,071 | 19,137 | o |
| Belvidere | City | Boone | 20,885 | 25,585 | 25,371 | o |
| Bement | Village | Piatt | 1,748 | 1,730 | 1,722 | o |
| Benld | City | Macoupin | 1,547 | 1,556 | 1,529 | o |
| Bensenville | Village | Cook/DuPage | 20,505 | 18,352 | 18,493 | o |
| Benson | Village | Woodford | 409 | 423 | 419 | o |
| Bentley | Town | Hancock | 46 | 35 | 35 | o |
| Benton | City | Franklin | 6,947 | 7,087 | 7,070 | o |
| Berkeley | Village | Cook | 5,242 | 5,209 | 5,231 | o |
| Berlin | Village | Sangamon | 154 | 180 | 181 | o |
| Berwyn | City | Cook | 54,030 | 56,657 | 56,800 | o |
| Bethalto | Village | Madison | 9,517 | 9,521 | 9,461 | o |
| Bethany | Village | Moultrie | 1,308 | 1,352 | 1,344 | o |
| Big Rock | Village | Kane | 1,184 | 1,126 | 1,141 | o |
| Biggsville | Village | Henderson | 344 | 304 | 292 | o |
| Bingham | Village | Fayette | 114 | 83 | 83 | o |
| Bishop Hill | Village | Henry | 130 | 128 | 127 | o |
| Bismarck | Village | Vermilion | 572 | 579 | 570 | o |
| Blandinsville | Village | McDonough | 781 | 651 | 647 | o |
| Bloomingdale | Village | DuPage | 21,658 | 22,020 | 22,237 | o |
| Bloomington | City | McLean | 65,540 | 76,608 | 77,733 | o |
| Blue Island | City | Cook | 23,510 | 23,706 | 23,816 | o |
| Blue Mound | Village | Macon | 1,132 | 1,158 | 1,150 | o |
| Bluffs | Village | Scott | 761 | 715 | 704 | o |
| Bluford | Village | Jefferson | 796 | 688 | 684 | o |
| Bolingbrook | Village | DuPage/Will | 56,396 | 73,366 | 74,039 | o |
| Bondville | Village | Champaign | 497 | 443 | 445 | o |
| Bone Gap | Village | Edwards | 272 | 246 | 246 | o |
| Bonfield | Village | Kankakee | 389 | 382 | 381 | o |
| Bonnie | Village | Jefferson | 381 | 397 | 394 | o |
| Bourbonnais | Village | Kankakee | 15,350 | 18,631 | 18,629 | o |
| Bowen | Village | Hancock | 541 | 494 | 486 | o |
| Braceville | Village | Grundy/Will | 790 | 792 | 786 | o |
| Bradford | Village | Stark | 781 | 768 | 759 | o |
| Bradley | Village | Kankakee | 12,945 | 15,895 | 15,871 | o |
| Braidwood | City | Will | 5,276 | 6,210 | 6,216 | o |
| Breese | City | Clinton | 4,060 | 4,442 | 4,516 | o |
| Bridgeport | City | Lawrence | 2,094 | 1,886 | 1,857 | o |
| Bridgeview | Village | Cook | 15,346 | 16,446 | 16,521 | o |
| Brighton | Village | Macoupin/Jersey | 2,261 | 2,254 | 2,234 | o |
| Brimfield | Village | Peoria | 920 | 868 | 869 | o |
| Broadlands | Village | Champaign | 320 | 349 | 353 | o |
| Broadview | Village | Cook | 8,315 | 7,932 | 7,963 | o |
| Broadwell | Village | Logan | 170 | 145 | 144 | o |
| Brocton | Village | Edgar | 322 | 322 | 312 | o |
| Brookfield | Village | Cook | 19,034 | 18,978 | 19,035 | o |
| Brooklyn | Village | St. Clair | 665 | 749 | 737 | o |
| Brookport | City | Massac | 1,026 | 984 | 968 | o |
| Broughton | Village | Hamilton | 194 | 194 | 193 | o |
| Browning | Village | Schuyler | 133 | 137 | 136 | o |
| Browns | Village | Edwards | 172 | 134 | 134 | o |
| Brownstown | Village | Fayette | 692 | 759 | 753 | o |
| Brussels | Village | Calhoun | 145 | 141 | 139 | o |
| Bryant | Village | Fulton | 263 | 222 | 220 | o |
| Buckingham | Village | Kankakee | 237 | 300 | 300 | o |
| Buckley | Village | Iroquois | 591 | 600 | 586 | o |
| Buckner | Village | Franklin | 479 | 462 | 458 | o |
| Buda | Village | Bureau | 581 | 538 | 529 | o |
| Buffalo | Village | Sangamon | 498 | 503 | 501 | o |
| Buffalo Grove | Village | Lake/Cook | 43,127 | 41,491 | 41,715 | o |
| Bull Valley | Village | McHenry | 1,044 | 1,069 | 1,064 | o |
| Bulpitt | Village | Christian | 206 | 222 | 221 | o |
| Buncombe | Village | Johnson | 191 | 203 | 207 | o |
| Bunker Hill | City | Macoupin | 1,824 | 1,774 | 1,755 | o |
| Burbank | City | Cook | 27,899 | 28,925 | 29,124 | o |
| Bureau Junction | Village | Bureau | 363 | 321 | 316 | o |
| Burlington | Village | Kane | 570 | 618 | 626 | o |
| Burnham | Village | Cook | 4,282 | 4,206 | 4,232 | o |
| Burnt Prairie | Village | White | 55 | 52 | 52 | o |
| Burr Ridge | Village | Cook/DuPage | 10,686 | 10,559 | 10,696 | o |
| Bush | Village | Williamson | 266 | 275 | 274 | o |
| Bushnell | City | McDonough | 3,288 | 3,117 | 3,099 | o |
| Butler | Village | Montgomery | 192 | 180 | 177 | o |
| Byron | City | Ogle | 2,933 | 3,753 | 3,711 | o |
| Cabery | Village | Ford/Kankakee | 247 | 266 | 265 | o |
| Cahokia | Village | St. Clair | 16,374 | 15,241 | 14,920 | o |
| Cairo | City | Alexander | 3,633 | 2,831 | 2,660 | o |
| Caledonia | Village | Boone | 199 | 197 | 196 | o |
| Calhoun | Village | Richland | 222 | 172 | 172 | o |
| Calumet City | City | Cook | 38,963 | 37,042 | 37,232 | o |
| Calumet Park | Village | Cook | 8,539 | 7,830 | 7,896 | o |
| Camargo | Village | Douglas | 462 | 445 | 445 | o |
| Cambria | Village | Williamson | 1,308 | 1,228 | 1,263 | o |
| Cambridge | Village | Henry | 2,198 | 2,160 | 2,144 | o |
| Camden | Village | Schuyler | 99 | 86 | 85 | o |
| Camp Point | Village | Adams | 1,295 | 1,132 | 1,129 | o |
| Campbell Hill | Village | Jackson | 335 | 333 | 330 | o |
| Campton Hills | Village | Kane | 9,054 | 11,107 | 11,276 | o |
| Campus | Village | Livingston | 155 | 166 | 165 | o |
| Canton | City | Fulton | 15,209 | 14,704 | 14,518 | o |
| Cantrall | Village | Sangamon | 146 | 139 | 140 | o |
| Capron | Village | Boone | 1,117 | 1,376 | 1,365 | o |
| Carbon Cliff | Village | Rock Island | 1,731 | 2,130 | 2,120 | o |
| Carbon Hill | Village | Grundy | 393 | 345 | 352 | o |
| Carbondale | City | Jackson | 25,933 | 26,125 | 26,241 | o |
| Carlinville | City | Macoupin | 6,179 | 5,918 | 5,851 | o |
| Carlock | Village | McLean | 472 | 552 | 555 | o |
| Carlyle | City | Clinton | 3,428 | 3,287 | 3,281 | o |
| Carmi | City | White | 5,401 | 5,240 | 5,205 | o |
| Carol Stream | Village | DuPage | 40,671 | 39,716 | 40,222 | o |
| Carpentersville | Village | Kane | 31,370 | 37,691 | 38,196 | o |
| Carrier Mills | Village | Saline | 1,936 | 1,653 | 1,654 | o |
| Carrollton | City | Greene | 2,602 | 2,488 | 2,427 | o |
| Carterville | City | Williamson | 4,630 | 5,502 | 5,589 | o |
| Carthage | City | Hancock | 2,713 | 2,605 | 2,576 | o |
| Cary | Village | McHenry | 15,647 | 18,269 | 18,139 | o |
| Casey | City | Clark/Cumberland | 2,943 | 2,777 | 2,751 | o |
| Caseyville | Village | St. Clair | 4,333 | 4,248 | 4,219 | o |
| Catlin | Village | Vermilion | 2,112 | 2,040 | 2,032 | o |
| Cave-In-Rock | Village | Hardin | 341 | 318 | 312 | o |
| Cedar Point | Village | LaSalle | 264 | 277 | 275 | o |
| Cedarville | Village | Stephenson | 736 | 741 | 728 | o |
| Central City | Village | Marion | 1,378 | 1,172 | 1,153 | o |
| Centralia | City | Jefferson/Washington/Marion/Clinton | 14,396 | 13,034 | 12,858 | o |
| Centreville | City | St. Clair | 5,990 | 5,309 | 5,194 | o |
| Cerro Gordo | Village | Piatt | 1,441 | 1,403 | 1,372 | o |
| Chadwick | Village | Carroll | 503 | 551 | 539 | o |
| Champaign | City | Champaign | 70,118 | 81,070 | 82,517 | o |
| Chandlerville | Village | Cass | 704 | 553 | 540 | o |
| Channahon | Village | Grundy/Will | 7,645 | 12,560 | 12,598 | o |
| Chapin | Village | Morgan | 596 | 512 | 505 | o |
| Charleston | City | Coles | 21,209 | 21,836 | 21,911 | o |
| Chatham | Village | Sangamon | 8,614 | 11,599 | 11,946 | o |
| Chatsworth | Town | Livingston | 1,292 | 1,206 | 1,191 | o |
| Chebanse | Village | Iroquois/Kankakee | 1,149 | 1,062 | 1,044 | o |
| Chenoa | City | McLean | 1,854 | 1,785 | 1,788 | o |
| Cherry | Village | Bureau | 502 | 482 | 474 | o |
| Cherry Valley | Village | Winnebago/Boone | 2,189 | 3,162 | 3,143 | o |
| Chester | City | Randolph | 8,339 | 8,586 | 8,480 | o |
| Chesterfield | Village | Macoupin | 223 | 188 | 186 | o |
| Chicago | City | Cook/DuPage | 2,895,966 | 2,695,598 | 2,714,856 | o |
| Chicago Heights | City | Cook | 32,823 | 30,276 | 30,392 | o |
| Chicago Ridge | Village | Cook | 14,267 | 14,308 | 14,428 | o |
| Chillicothe | City | Peoria | 6,022 | 6,097 | 6,124 | o |
| Chrisman | City | Edgar | 1,310 | 1,343 | 1,317 | o |
| Christopher | City | Franklin | 2,864 | 2,380 | 2,369 | o |
| Cicero | Town | Cook | 85,993 | 83,891 | 84,137 | o |
| Cisco | Village | Piatt | 286 | 261 | 257 | o |
| Cisne | Village | Wayne | 684 | 670 | 662 | o |
| Cissna Park | Village | Iroquois | 805 | 846 | 829 | o |
| Claremont | Village | Richland | 209 | 176 | 176 | o |
| Clarendon Hills | Village | DuPage | 7,753 | 8,427 | 8,570 | o |
| Clay City | Village | Clay | 1,013 | 961 | 957 | o |
| Clayton | Village | Adams | 853 | 709 | 704 | o |
| Clear Lake | Village | Sangamon | 263 | 229 | 230 | o |
| Cleveland | Village | Henry | 252 | 188 | 187 | o |
| Clifton | Village | Iroquois | 1,307 | 1,468 | 1,435 | o |
| Clinton | City | De Witt | 7,370 | 7,237 | 7,158 | o |
| Coal City | Village | Grundy/Will | 4,852 | 5,587 | 5,557 | o |
| Coal Valley | Village | Henry/Rock Island | 3,584 | 3,743 | 3,774 | o |
| Coalton | Village | Montgomery | 301 | 304 | 299 | o |
| Coatsburg | Village | Adams | 222 | 147 | 147 | o |
| Cobden | Village | Union | 1,153 | 1,157 | 1,140 | o |
| Coffeen | City | Montgomery | 729 | 685 | 674 | o |
| Colchester | City | McDonough | 1,510 | 1,399 | 1,394 | o |
| Coleta | Village | Whiteside | 160 | 164 | 163 | o |
| Colfax | Village | McLean | 989 | 1,061 | 1,062 | o |
| Collinsville | City | St. Clair/Madison | 24,673 | 25,576 | 25,240 | o |
| Colona | City | Henry | 5,067 | 5,073 | 5,056 | o |
| Colp | Village | Williamson | 226 | 225 | 225 | o |
| Columbia | City | St. Clair/Monroe | 7,875 | 9,682 | 9,896 | o |
| Columbus | Village | Adams | 112 | 99 | 99 | o |
| Compton | Village | Lee | 351 | 303 | 292 | o |
| Concord | Village | Morgan | 174 | 167 | 166 | o |
| Congerville | Village | Woodford | 580 | 474 | 480 | o |
| Cooksville | Village | McLean | 211 | 185 | 186 | o |
| Cordova | Village | Rock Island | 654 | 672 | 669 | o |
| Cornell | Village | Livingston | 503 | 467 | 464 | o |
| Cortland | Town | DeKalb | 2,090 | 4,270 | 4,318 | o |
| Coulterville | Village | Randolph | 1,149 | 945 | 927 | o |
| Country Club Hills | City | Cook | 16,211 | 16,543 | 16,854 | o |
| Countryside | City | Cook | 5,791 | 5,895 | 5,971 | o |
| Cowden | Village | Shelby | 614 | 622 | 609 | o |
| Crainville | Village | Williamson | 1,077 | 1,267 | 1,303 | o |
| Creal Springs | City | Williamson | 705 | 543 | 538 | o |
| Crescent City | Village | Iroquois | 637 | 615 | 610 | o |
| Crest Hill | City | Will | 13,481 | 20,837 | 20,864 | o |
| Creston | Village | Ogle | 537 | 662 | 663 | o |
| Crestwood | Village | Cook | 11,298 | 10,950 | 11,018 | o |
| Crete | Village | Will/Cook | 7,731 | 8,252 | 8,281 | o |
| Creve Coeur | Village | Tazewell | 5,444 | 5,451 | 5,421 | o |
| Crossville | Village | White | 741 | 745 | 739 | o |
| Crystal Lake | City | McHenry | 37,976 | 40,739 | 40,480 | o |
| Cuba | City | Fulton | 1,427 | 1,294 | 1,273 | o |
| Cullom | Village | Livingston | 556 | 555 | 548 | o |
| Curran | Village | Sangamon | 247 | 212 | 213 | o |
| Cutler | Village | Perry | 545 | 441 | 434 | o |
| Cypress | Village | Johnson | 268 | 234 | 238 | o |
| Dahlgren | Village | Hamilton | 514 | 525 | 518 | o |
| Dakota | Village | Stephenson | 508 | 506 | 496 | o |
| Dallas City | City | Hancock/Henderson | 1,028 | 945 | 928 | o |
| Dalton City | Village | Moultrie | 577 | 544 | 542 | o |
| Dalzell | Village | LaSalle/Bureau | 724 | 717 | 701 | o |
| Damiansville | Village | Clinton | 499 | 491 | 496 | o |
| Dana | Village | LaSalle | 171 | 159 | 158 | o |
| Danforth | Village | Iroquois | 579 | 604 | 592 | o |
| Danvers | Village | McLean | 1,182 | 1,154 | 1,155 | o |
| Danville | City | Vermilion | 34,557 | 33,027 | 32,649 | o |
| Darien | City | DuPage | 22,943 | 22,088 | 22,302 | o |
| Davis | Village | Stephenson | 665 | 677 | 664 | o |
| Davis Junction | Village | Ogle | 941 | 2,373 | 2,342 | o |
| Dawson | Village | Sangamon | 520 | 509 | 507 | o |
| De Land | Village | Piatt | 470 | 446 | 437 | o |
| De Pue | Village | Bureau | 1,840 | 1,833 | 1,790 | o |
| De Soto | Village | Jackson | 1,633 | 1,590 | 1,591 | o |
| De Witt | Village | De Witt | 185 | 184 | 183 | o |
| Decatur | City | Macon | 82,061 | 76,114 | 75,407 | o |
| Deer Creek | Village | Tazewell/Woodford | 602 | 704 | 705 | o |
| Deer Grove | Village | Whiteside | 47 | 48 | 48 | o |
| Deer Park | Village | Lake/Cook | 3,172 | 3,202 | 3,221 | o |
| Deerfield | Village | Lake/Cook | 18,487 | 18,228 | 18,275 | o |
| DeKalb | City | DeKalb | 39,017 | 44,101 | 43,842 | o |
| Delavan | City | Tazewell | 1,799 | 1,689 | 1,682 | o |
| Des Plaines | City | Cook | 56,900 | 58,364 | 58,840 | o |
| Detroit | Village | Pike | 95 | 83 | 82 | o |
| Diamond | Village | Grundy/Will | 1,386 | 2,527 | 2,522 | o |
| Dieterich | Village | Effingham | 608 | 617 | 614 | o |
| Divernon | Village | Sangamon | 1,197 | 1,172 | 1,173 | o |
| Dix | Village | Jefferson | 501 | 461 | 462 | o |
| Dixmoor | Village | Cook | 3,934 | 3,644 | 3,650 | o |
| Dixon | City | Lee | 15,835 | 15,735 | 15,400 | o |
| Dolton | Village | Cook | 25,460 | 23,153 | 23,274 | o |
| Dongola | Village | Union | 817 | 726 | 722 | o |
| Donnellson | Village | Bond/Montgomery | 258 | 210 | 207 | o |
| Donovan | Village | Iroquois | 340 | 304 | 304 | o |
| Dorchester | Village | Macoupin | 141 | 151 | 149 | o |
| Dover | Village | Bureau | 172 | 168 | 165 | o |
| Dowell | Village | Jackson | 438 | 408 | 402 | o |
| Downers Grove | Village | DuPage | 49,288 | 48,860 | 49,399 | o |
| Downs | Village | McLean | 850 | 1,005 | 1,005 | o |
| Du Bois | Village | Washington | 218 | 205 | 204 | o |
| Du Quoin | City | Perry | 6,492 | 6,109 | 6,020 | o |
| Dunfermline | Village | Fulton | 270 | 300 | 297 | o |
| Dunlap | Village | Peoria | 962 | 1,388 | 1,392 | o |
| Dupo | Village | St. Clair | 3,843 | 4,142 | 4,066 | o |
| Durand | Village | Winnebago | 1,151 | 1,443 | 1,430 | o |
| Dwight | Village | Grundy/Livingston | 4,365 | 4,260 | 4,217 | o |
| Eagarville | Village | Macoupin | 128 | 127 | 126 | o |
| Earlville | City | LaSalle | 1,752 | 1,701 | 1,680 | o |
| East Alton | Village | Madison | 6,874 | 6,301 | 6,210 | o |
| East Brooklyn | Village | Grundy | 111 | 106 | 106 | o |
| East Cape Girardeau | Village | Alexander | 431 | 387 | 361 | o |
| East Carondelet | Village | St. Clair | 298 | 499 | 486 | o |
| East Dubuque | City | Jo Daviess | 1,886 | 1,710 | 1,696 | o |
| East Dundee | Village | Cook/Kane | 2,978 | 2,860 | 2,882 | o |
| East Galesburg | Village | Knox | 842 | 816 | 806 | o |
| East Gillespie | Village | Macoupin | 234 | 270 | 272 | o |
| East Hazel Crest | Village | Cook | 1,607 | 1,543 | 1,554 | o |
| East Moline | City | Rock Island | 21,555 | 21,302 | 21,398 | o |
| East Peoria | City | Tazewell | 22,693 | 23,405 | 23,445 | o |
| East St. Louis | City | St. Clair | 31,667 | 27,006 | 26,708 | o |
| Easton | Village | Mason | 358 | 321 | 311 | o |
| Eddyville | Village | Pope | 143 | 101 | 97 | o |
| Edgewood | Village | Effingham | 529 | 440 | 434 | o |
| Edinburg | Village | Christian | 1,136 | 1,078 | 1,075 | o |
| Edwardsville | City | Madison | 21,703 | 24,293 | 24,457 | o |
| Effingham | City | Effingham | 12,446 | 12,328 | 12,554 | o |
| El Dara | Village | Pike | 89 | 78 | 77 | o |
| El Paso | City | Woodford/McLean | 2,804 | 2,810 | 2,809 | o |
| Elburn | Village | Kane | 2,768 | 5,602 | 5,669 | o |
| Eldorado | City | Saline | 4,520 | 4,122 | 4,122 | o |
| Eldred | Village | Greene | 223 | 201 | 197 | o |
| Elgin | City | Cook/Kane | 94,638 | 108,190 | 109,927 | o |
| Elizabeth | Village | Jo Daviess | 712 | 761 | 758 | o |
| Elizabethtown | Village | Hardin | 352 | 312 | 306 | o |
| Elk Grove Village | Village | Cook/DuPage | 34,666 | 33,127 | 33,350 | o |
| Elkhart | Village | Logan | 457 | 405 | 402 | o |
| Elkville | Village | Jackson | 981 | 928 | 920 | o |
| Elliott | Village | Ford | 332 | 295 | 294 | o |
| Ellis Grove | Village | Randolph | 400 | 363 | 356 | o |
| Ellisville | Village | Fulton | 85 | 96 | 95 | o |
| Ellsworth | Village | McLean | 270 | 195 | 196 | o |
| Elmhurst | City | Cook/DuPage | 42,946 | 44,140 | 45,171 | o |
| Elmwood | City | Peoria | 1,957 | 2,097 | 2,102 | o |
| Elmwood Park | Village | Cook | 25,408 | 24,883 | 24,973 | o |
| Elsah | Village | Jersey | 632 | 673 | 670 | o |
| Elvaston | Village | Hancock | 155 | 165 | 164 | o |
| Elwood | Village | Will | 1,609 | 2,279 | 2,280 | o |
| Emden | Village | Logan | 521 | 485 | 479 | o |
| Emington | Village | Livingston | 120 | 117 | 117 | o |
| Energy | Village | Williamson | 1,159 | 1,146 | 1,146 | o |
| Enfield | Village | White | 621 | 596 | 591 | o |
| Equality | Village | Gallatin | 739 | 595 | 576 | o |
| Erie | Village | Whiteside | 1,580 | 1,602 | 1,582 | o |
| Essex | Village | Kankakee | 576 | 802 | 795 | o |
| Eureka | City | Woodford | 5,048 | 5,303 | 5,345 | o |
| Evanston | City | Cook | 74,269 | 74,486 | 75,430 | o |
| Evansville | Village | Randolph | 741 | 701 | 690 | o |
| Evergreen Park | Village | Cook | 20,820 | 19,852 | 19,929 | o |
| Ewing | Village | Franklin | 312 | 307 | 307 | o |
| Exeter | Village | Scott | 72 | 65 | 64 | o |
| Fairbury | City | Livingston | 3,938 | 3,757 | 3,735 | o |
| Fairfield | City | Wayne | 5,485 | 5,154 | 5,087 | o |
| Fairmont City | Village | St. Clair/Madison | 2,431 | 2,635 | 2,588 | o |
| Fairmount | Village | Vermilion | 648 | 642 | 633 | o |
| Fairview | Village | Fulton | 498 | 522 | 512 | o |
| Fairview Heights | City | St. Clair | 14,981 | 17,078 | 16,996 | o |
| Farina | Village | Marion/Fayette | 558 | 518 | 513 | o |
| Farmer City | City | De Witt | 2,059 | 2,038 | 2,030 | o |
| Farmersville | Village | Montgomery | 766 | 724 | 712 | o |
| Farmington | City | Fulton/Peoria | 2,498 | 2,445 | 2,415 | o |
| Fayetteville | Village | St. Clair | 383 | 366 | 358 | o |
| Ferris | Village | Hancock | 169 | 156 | 155 | o |
| Fidelity | Village | Jersey | 111 | 114 | 112 | o |
| Fieldon | Village | Jersey | 271 | 239 | 234 | o |
| Fillmore | Village | Montgomery | 365 | 330 | 325 | o |
| Findlay | Village | Shelby | 711 | 683 | 672 | o |
| Fisher | Village | Champaign | 1,646 | 1,881 | 1,914 | o |
| Fithian | Village | Vermilion | 511 | 485 | 478 | o |
| Flanagan | Village | Livingston | 1,131 | 1,110 | 1,100 | o |
| Flat Rock | Village | Crawford | 429 | 331 | 327 | o |
| Flora | City | Clay | 5,216 | 5,074 | 5,058 | o |
| Florence | Village | Pike | 67 | 38 | 38 | o |
| Flossmoor | Village | Cook | 9,262 | 9,464 | 9,512 | o |
| Foosland | Village | Champaign | 90 | 101 | 101 | o |
| Ford Heights | Village | Cook | 3,476 | 2,763 | 2,778 | o |
| Forest City | Village | Mason | 291 | 246 | 241 | o |
| Forest Park | Village | Cook | 15,666 | 14,167 | 14,219 | o |
| Forest View | Village | Cook | 706 | 698 | 700 | o |
| Forrest | Village | Livingston | 1,230 | 1,220 | 1,203 | o |
| Forreston | Village | Ogle | 1,475 | 1,446 | 1,421 | o |
| Forsyth | Village | Macon | 2,465 | 3,490 | 3,578 | o |
| Fox Lake | Village | Lake/McHenry | 9,054 | 10,579 | 10,551 | o |
| Fox River Grove | Village | Lake/McHenry | 4,959 | 4,791 | 4,753 | o |
| Frankfort | Village | Cook/Will | 10,295 | 17,782 | 18,042 | o |
| Franklin | Village | Morgan | 631 | 610 | 608 | o |
| Franklin Grove | Village | Lee | 1,077 | 1,021 | 989 | o |
| Franklin Park | Village | Cook | 19,483 | 18,330 | 18,398 | o |
| Freeburg | Village | St. Clair | 3,975 | 4,357 | 4,362 | o |
| Freeman Spur | Village | Williamson/Franklin | 267 | 292 | 292 | o |
| Freeport | City | Stephenson | 26,389 | 25,637 | 25,185 | o |
| Fulton | City | Whiteside | 3,895 | 3,481 | 3,431 | o |
| Fults | Village | Monroe | 28 | 26 | 26 | o |
| Galatia | Village | Saline | 1,027 | 933 | 934 | o |
| Galena | City | Jo Daviess | 3,478 | 3,429 | 3,400 | o |
| Galesburg | City | Knox | 33,755 | 32,185 | 31,745 | o |
| Galva | City | Henry | 2,784 | 2,589 | 2,559 | o |
| Gardner | Village | Grundy | 1,439 | 1,463 | 1,454 | o |
| Garrett | Village | Douglas | 205 | 162 | 161 | o |
| Gays | Village | Moultrie | 270 | 281 | 281 | o |
| Geneseo | City | Henry | 6,427 | 6,585 | 6,550 | o |
| Geneva | City | Kane | 19,525 | 21,495 | 21,722 | o |
| Genoa | City | DeKalb | 4,176 | 5,193 | 5,186 | o |
| Georgetown | City | Vermilion | 3,550 | 3,474 | 3,436 | o |
| German Valley | Village | Stephenson | 486 | 463 | 458 | o |
| Germantown | Village | Clinton | 1,171 | 1,281 | 1,294 | o |
| Germantown Hills | Village | Woodford | 2,282 | 3,435 | 3,493 | o |
| Gibson City | City | Ford | 3,352 | 3,407 | 3,393 | o |
| Gifford | Village | Champaign | 827 | 975 | 975 | o |
| Gilberts | Village | Kane | 1,294 | 6,879 | 7,336 | o |
| Gillespie | City | Macoupin | 3,414 | 3,319 | 3,265 | o |
| Gilman | City | Iroquois | 1,833 | 1,814 | 1,787 | o |
| Girard | City | Macoupin | 2,244 | 2,103 | 2,077 | o |
| Gladstone | Village | Henderson | 287 | 281 | 272 | o |
| Glasford | Village | Peoria | 1,077 | 1,022 | 1,019 | o |
| Glasgow | Village | Scott | 173 | 141 | 140 | o |
| Glen Carbon | Village | Madison | 10,587 | 12,934 | 12,922 | o |
| Glen Ellyn | Village | DuPage | 27,164 | 27,365 | 27,650 | o |
| Glencoe | Village | Cook | 8,734 | 8,723 | 8,813 | o |
| Glendale Heights | Village | DuPage | 31,870 | 34,212 | 34,535 | o |
| Glenview | Village | Cook | 41,739 | 44,692 | 45,029 | o |
| Glenwood | Village | Cook | 8,930 | 8,990 | 9,045 | o |
| Godfrey | Village | Madison | 16,891 | 18,007 | 17,923 | o |
| Godley | Village | Grundy/Will | 595 | 602 | 640 | o |
| Golconda | City | Pope | 757 | 668 | 637 | o |
| Golden | Village | Adams | 623 | 644 | 641 | o |
| Golden Gate | Village | Wayne | 100 | 68 | 68 | o |
| Golf | Village | Cook | 456 | 500 | 505 | o |
| Good Hope | Village | McDonough | 426 | 396 | 396 | o |
| Goodfield | Village | Tazewell/Woodford | 788 | 858 | 879 | o |
| Goreville | Village | Johnson | 969 | 1,049 | 1,080 | o |
| Gorham | Village | Jackson | 256 | 236 | 235 | o |
| Grafton | City | Jersey | 626 | 674 | 664 | o |
| Grand Ridge | Village | LaSalle | 546 | 560 | 551 | o |
| Grand Tower | City | Jackson | 622 | 605 | 599 | o |
| Grandview | Village | Sangamon | 1,534 | 1,441 | 1,438 | o |
| Granite City | City | Madison | 31,891 | 29,849 | 29,545 | o |
| Grant Park | Village | Kankakee | 1,380 | 1,331 | 1,324 | o |
| Grantfork | Village | Madison | 257 | 337 | 334 | o |
| Granville | Village | Putnam | 1,405 | 1,427 | 1,388 | o |
| Grayslake | Village | Lake | 18,563 | 20,957 | 21,101 | o |
| Grayville | City | White/Edwards | 1,837 | 1,666 | 1,651 | o |
| Green Oaks | Village | Lake | 3,573 | 3,866 | 3,863 | o |
| Green Valley | Village | Tazewell | 706 | 709 | 705 | o |
| Greenfield | City | Greene | 1,177 | 1,071 | 1,043 | o |
| Greenup | Village | Cumberland | 1,554 | 1,513 | 1,504 | o |
| Greenview | Village | Menard | 862 | 778 | 774 | o |
| Greenville | City | Bond | 7,030 | 7,011 | 6,976 | o |
| Greenwood | Village | McHenry | 243 | 255 | 254 | o |
| Gridley | Village | McLean | 1,429 | 1,432 | 1,454 | o |
| Griggsville | City | Pike | 1,256 | 1,226 | 1,212 | o |
| Gulf Port | Village | Henderson | 205 | 54 | 52 | o |
| Gurnee | Village | Lake | 28,809 | 31,298 | 31,273 | o |
| Hainesville | Village | Lake | 2,028 | 3,597 | 3,594 | o |
| Hamburg | Village | Calhoun | 125 | 128 | 126 | o |
| Hamel | Village | Madison | 570 | 816 | 815 | o |
| Hamilton | City | Hancock | 3,029 | 2,951 | 2,916 | o |
| Hammond | Village | Piatt | 518 | 509 | 497 | o |
| Hampshire | Village | Kane | 2,871 | 5,563 | 5,624 | o |
| Hampton | Village | Rock Island | 1,660 | 1,863 | 1,863 | o |
| Hanaford | Village | Franklin | 171 | 327 | 325 | o |
| Hanna City | Village | Peoria | 1,025 | 1,225 | 1,229 | o |
| Hanover | Village | Jo Daviess | 857 | 843 | 832 | o |
| Hanover Park | Village | Cook/DuPage | 38,129 | 37,958 | 38,373 | o |
| Hardin | Village | Calhoun | 956 | 967 | 954 | o |
| Harmon | Village | Lee | 145 | 120 | 116 | o |
| Harrisburg | City | Saline | 9,762 | 9,025 | 9,034 | o |
| Harristown | Village | Macon | 1,358 | 1,367 | 1,358 | o |
| Hartford | Village | Madison | 1,532 | 1,429 | 1,407 | o |
| Hartsburg | Village | Logan | 343 | 314 | 314 | o |
| Harvard | City | McHenry | 8,066 | 9,447 | 9,357 | o |
| Harvel | Village | Christian/Montgomery | 239 | 223 | 220 | o |
| Harvey | City | Cook | 30,031 | 25,282 | 25,381 | o |
| Harwood Heights | Village | Cook | 8,307 | 8,612 | 8,661 | o |
| Havana | City | Mason | 3,594 | 3,301 | 3,221 | o |
| Hawthorn Woods | Village | Lake | 6,058 | 7,686 | 7,725 | o |
| Hazel Crest | Village | Cook | 14,805 | 14,100 | 14,184 | o |
| Hebron | Village | McHenry | 1,088 | 1,216 | 1,208 | o |
| Hecker | Village | St. Clair/Monroe | 470 | 481 | 480 | o |
| Henderson | Village | Knox | 317 | 255 | 253 | o |
| Hennepin | Village | Putnam | 700 | 757 | 736 | o |
| Henning | Village | Vermilion | 246 | 251 | 249 | o |
| Henry | City | Marshall | 2,534 | 2,464 | 2,399 | o |
| Herrick | Village | Shelby | 511 | 436 | 432 | o |
| Herrin | City | Williamson | 11,247 | 12,521 | 12,696 | o |
| Herscher | Village | Kankakee | 1,510 | 1,591 | 1,593 | o |
| Hettick | Village | Macoupin | 182 | 181 | 179 | o |
| Heyworth | Village | McLean | 2,514 | 2,841 | 2,880 | o |
| Hickory Hills | City | Cook | 13,935 | 14,049 | 14,145 | o |
| Hidalgo | Village | Jasper | 127 | 106 | 105 | o |
| Highland | City | Madison | 8,462 | 9,919 | 9,900 | o |
| Highland Park | City | Lake | 30,335 | 29,791 | 29,914 | o |
| Highwood | City | Lake | 5,391 | 5,377 | 5,354 | o |
| Hillcrest | Village | Ogle | 1,184 | 1,326 | 1,303 | o |
| Hillsboro | City | Montgomery | 6,389 | 6,207 | 6,131 | o |
| Hillsdale | Village | Rock Island | 596 | 523 | 523 | o |
| Hillside | Village | Cook | 8,163 | 8,157 | 8,193 | o |
| Hillview | Village | Greene | 182 | 193 | 189 | o |
| Hinckley | Village | DeKalb | 1,991 | 2,070 | 2,054 | o |
| Hindsboro | Village | Douglas | 361 | 313 | 307 | o |
| Hinsdale | Village | Cook/DuPage | 17,417 | 16,816 | 17,126 | o |
| Hodgkins | Village | Cook | 2,135 | 1,897 | 1,896 | o |
| Hoffman | Village | Clinton | 463 | 508 | 505 | o |
| Hoffman Estates | Village | Cook/Kane | 49,685 | 51,895 | 52,305 | o |
| Holiday Hills | Village | McHenry | 743 | 601 | 593 | o |
| Hollowayville | Village | Bureau | 82 | 84 | 83 | o |
| Homer | Village | Champaign | 1,204 | 1,193 | 1,196 | o |
| Homer Glen | Village | Will | 22,301 | 24,224 | 24,363 | o |
| Hometown | City | Cook | 4,467 | 4,349 | 4,363 | o |
| Homewood | Village | Cook | 19,578 | 19,323 | 19,418 | o |
| Hoopeston | City | Vermilion | 5,696 | 5,351 | 5,286 | o |
| Hooppole | Village | Henry | 162 | 204 | 203 | o |
| Hopedale | Village | Tazewell | 924 | 865 | 868 | o |
| Hopewell | Village | Marshall | 383 | 410 | 413 | o |
| Hopkins Park | Village | Kankakee | 722 | 603 | 598 | o |
| Hoyleton | Village | Washington | 571 | 531 | 527 | o |
| Hudson | Village | McLean | 1,538 | 1,838 | 1,848 | o |
| Huey | Village | Clinton | 188 | 169 | 169 | o |
| Hull | Village | Pike | 474 | 461 | 454 | o |
| Humboldt | Village | Coles | 471 | 437 | 434 | o |
| Hume | Village | Edgar | 376 | 380 | 374 | o |
| Huntley | Village | Kane/McHenry | 5,800 | 24,292 | 24,820 | o |
| Hurst | City | Williamson | 806 | 795 | 791 | o |
| Hutsonville | Village | Crawford | 619 | 554 | 544 | o |
| Illiopolis | Village | Sangamon | 926 | 891 | 895 | o |
| Ina | Village | Jefferson | 2,520 | 2,338 | 2,334 | o |
| Indian Creek | Village | Lake | 223 | 468 | 468 | o |
| Indian Head Park | Village | Cook | 3,874 | 3,809 | 3,836 | o |
| Indianola | Village | Vermilion | 227 | 276 | 274 | o |
| Industry | Village | McDonough | 566 | 478 | 477 | o |
| Inverness | Village | Cook | 6,949 | 7,399 | 7,491 | o |
| Iola | Village | Clay | 171 | 141 | 141 | o |
| Ipava | Village | Fulton | 518 | 470 | 464 | o |
| Iroquois | Village | Iroquois | 205 | 154 | 152 | o |
| Irving | Village | Montgomery | 500 | 495 | 487 | o |
| Irvington | Village | Washington | 791 | 665 | 659 | o |
| Irwin | Village | Kankakee | 90 | 74 | 74 | o |
| Island Lake | Village | Lake/McHenry | 8,173 | 8,080 | 8,042 | o |
| Itasca | Village | DuPage | 8,243 | 8,649 | 8,774 | o |
| Iuka | Village | Marion | 596 | 489 | 480 | o |
| Ivesdale | Village | Piatt/Champaign | 290 | 267 | 268 | o |
| Jacksonville | City | Morgan | 19,070 | 19,446 | 19,301 | o |
| Jeffersonville | Village | Wayne | 371 | 367 | 361 | o |
| Jeisyville | Village | Christian | 128 | 107 | 107 | o |
| Jerome | Village | Sangamon | 1,769 | 1,657 | 1,652 | o |
| Jerseyville | City | Jersey | 8,127 | 8,462 | 8,482 | o |
| Jewett | Village | Cumberland | 238 | 223 | 222 | o |
| Johnsburg | Village | McHenry | 5,413 | 6,337 | 6,333 | o |
| Johnsonville | Village | Wayne | 69 | 77 | 77 | o |
| Johnston City | City | Williamson | 3,599 | 3,557 | 3,531 | o |
| Joliet | City | Kendall/Will | 106,849 | 147,463 | 148,268 | o |
| Jonesboro | City | Union | 1,886 | 1,821 | 1,797 | o |
| Joppa | Village | Massac | 407 | 360 | 357 | o |
| Joy | Village | Mercer | 377 | 417 | 408 | o |
| Junction | Village | Gallatin | 142 | 129 | 126 | o |
| Junction City | Village | Marion | 563 | 482 | 473 | o |
| Justice | Village | Cook | 12,143 | 12,926 | 13,026 | o |
| Kampsville | Village | Calhoun | 319 | 328 | 323 | o |
| Kane | Village | Greene | 468 | 438 | 425 | o |
| Kaneville | Village | Kane | 438 | 484 | 490 | o |
| Kangley | Village | LaSalle | 283 | 251 | 249 | o |
| Kankakee | City | Kankakee | 27,371 | 27,537 | 27,349 | o |
| Kansas | Village | Edgar | 836 | 787 | 769 | o |
| Kappa | Village | Woodford | 181 | 227 | 234 | o |
| Karnak | Village | Pulaski | 641 | 499 | 483 | o |
| Kaskaskia | Village | Randolph | 9 | 14 | 14 | o |
| Keenes | Village | Wayne | 102 | 83 | 83 | o |
| Keensburg | Village | Wabash | 265 | 210 | 207 | o |
| Keithsburg | City | Mercer | 720 | 609 | 600 | o |
| Kell | Village | Marion | 208 | 219 | 217 | o |
| Kempton | Village | Ford | 236 | 231 | 230 | o |
| Kenilworth | Village | Cook | 2,614 | 2,513 | 2,523 | o |
| Kenney | Village | De Witt | 373 | 326 | 324 | o |
| Kewanee | City | Henry | 12,907 | 12,916 | 12,778 | o |
| Keyesport | Village | Bond/Clinton | 491 | 421 | 416 | o |
| Kilbourne | Village | Mason | 378 | 302 | 296 | o |
| Kildeer | Village | Lake | 3,354 | 3,968 | 3,974 | o |
| Kincaid | Village | Christian | 1,439 | 1,505 | 1,490 | o |
| Kinderhook | Village | Pike | 255 | 216 | 215 | o |
| Kingston | Village | DeKalb | 970 | 1,164 | 1,160 | o |
| Kingston Mines | Village | Peoria | 284 | 302 | 302 | o |
| Kinmundy | City | Marion | 899 | 796 | 785 | o |
| Kinsman | Village | Grundy | 109 | 99 | 99 | o |
| Kirkland | Village | DeKalb | 1,166 | 1,744 | 1,731 | o |
| Kirkwood | Village | Warren | 794 | 714 | 709 | o |
| Knoxville | City | Knox | 3,130 | 2,913 | 2,885 | o |
| La Fayette | Village | Stark | 230 | 223 | 222 | o |
| La Grange | Village | Cook | 15,738 | 15,550 | 15,680 | o |
| La Grange Park | Village | Cook | 13,226 | 13,579 | 13,635 | o |
| La Harpe | City | Hancock | 1,389 | 1,235 | 1,222 | o |
| La Moille | Village | Bureau | 761 | 726 | 714 | o |
| La Prairie | Village | Adams | 60 | 47 | 47 | o |
| La Rose | Village | Marshall | 159 | 144 | 141 | o |
| Lacon | City | Marshall | 1,995 | 1,937 | 1,880 | o |
| Ladd | Village | Bureau | 1,315 | 1,295 | 1,265 | o |
| Lake Barrington | Village | Lake | 4,766 | 4,973 | 4,973 | o |
| Lake Bluff | Village | Lake | 6,043 | 5,724 | 5,710 | o |
| Lake Forest | City | Lake | 20,068 | 19,375 | 19,349 | o |
| Lake in the Hills | Village | McHenry | 23,577 | 28,965 | 29,098 | o |
| Lake Ka-ho | Village | Macoupin | 260 | 237 | 232 | o |
| Lake Villa | Village | Lake | 5,916 | 8,741 | 8,788 | o |
| Lake Zurich | Village | Lake | 18,472 | 19,644 | 19,917 | o |
| Lakemoor | Village | Lake/McHenry | 2,853 | 6,015 | 6,041 | o |
| Lakewood | Village | McHenry | 2,321 | 3,851 | 3,822 | o |
| Lanark | City | Carroll | 1,581 | 1,457 | 1,416 | o |
| Lansing | Village | Cook | 28,281 | 28,331 | 28,479 | o |
| LaSalle | City | LaSalle | 9,773 | 9,613 | 9,486 | o |
| Latham | Village | Logan | 366 | 380 | 373 | o |
| Lawrenceville | City | Lawrence | 4,756 | 4,348 | 4,269 | o |
| Le Roy | City | McLean | 3,350 | 3,564 | 3,585 | o |
| Leaf River | Village | Ogle | 555 | 443 | 433 | o |
| Lebanon | City | St. Clair | 3,558 | 4,470 | 4,466 | o |
| Lee | Village | DeKalb/Lee | 313 | 337 | 331 | o |
| Leland | Village | LaSalle | 967 | 977 | 965 | o |
| Leland Grove | City | Sangamon | 1,570 | 1,503 | 1,559 | o |
| Lemont | Village | Cook/DuPage/Will | 13,216 | 16,107 | 16,377 | o |
| Lena | Village | Stephenson | 2,890 | 2,912 | 2,871 | o |
| Lenzburg | Village | St. Clair | 578 | 521 | 511 | o |
| Leonore | Village | LaSalle | 114 | 130 | 129 | o |
| Lerna | Village | Coles | 342 | 286 | 284 | o |
| Lewistown | City | Fulton | 2,521 | 2,384 | 2,349 | o |
| Lexington | City | McLean | 1,975 | 2,060 | 2,069 | o |
| Liberty | Village | Adams | 522 | 516 | 516 | o |
| Libertyville | Village | Lake | 20,753 | 20,315 | 20,360 | o |
| Lily Lake | Village | Kane | 843 | 993 | 1,006 | o |
| Lima | Village | Adams | 216 | 161 | 161 | o |
| Limestone | Village | Kankakee | 1,618 | 1,603 | 1,600 | o |
| Lincoln | City | Logan | 15,270 | 14,504 | 14,319 | o |
| Lincolnshire | Village | Lake | 6,126 | 7,275 | 7,274 | o |
| Lincolnwood | Village | Cook | 12,362 | 12,590 | 12,656 | o |
| Lindenhurst | Village | Lake | 12,563 | 14,466 | 14,475 | o |
| Lisbon | Village | Kendall | 278 | 285 | 291 | o |
| Lisle | Village | DuPage | 22,160 | 22,414 | 22,647 | o |
| Litchfield | City | Montgomery | 7,061 | 6,939 | 6,814 | o |
| Little York | Village | Warren | 290 | 331 | 327 | o |
| Littleton | Village | Schuyler | 196 | 181 | 179 | o |
| Liverpool | Village | Fulton | 123 | 129 | 128 | o |
| Livingston | Village | Madison | 823 | 858 | 846 | o |
| Loami | Village | Sangamon | 812 | 745 | 753 | o |
| Lockport | City | Will | 15,004 | 24,836 | 25,046 | o |
| Loda | Village | Iroquois | 418 | 407 | 401 | o |
| Lomax | Village | Henderson | 549 | 454 | 432 | o |
| Lombard | Village | DuPage | 42,341 | 43,395 | 43,773 | o |
| London Mills | Village | Fulton/Knox | 445 | 392 | 388 | o |
| Long Creek | Village | Macon | 1,424 | 1,324 | 1,328 | o |
| Long Grove | Village | Lake | 6,728 | 8,043 | 8,052 | o |
| Long Point | Village | Livingston | 247 | 226 | 225 | o |
| Longview | Village | Champaign | 154 | 153 | 154 | o |
| Loraine | Village | Adams | 363 | 313 | 313 | o |
| Lostant | Village | LaSalle | 483 | 506 | 498 | o |
| Louisville | Village | Clay | 1,302 | 1,139 | 1,135 | o |
| Loves Park | City | Boone/Winnebago | 20,255 | 24,001 | 23,805 | o |
| Lovington | Village | Moultrie | 1,219 | 1,130 | 1,124 | o |
| Ludlow | Village | Champaign | 367 | 371 | 368 | o |
| Lyndon | Village | Whiteside | 566 | 648 | 642 | o |
| Lynnville | Village | Morgan | 137 | 117 | 117 | o |
| Lynwood | Village | Cook | 7,979 | 9,053 | 9,317 | o |
| Lyons | Village | Cook | 10,264 | 10,729 | 10,770 | o |
| Macedonia | Village | Franklin/Hamilton | 59 | 63 | 63 | o |
| Machesney Park | Village | Winnebago | 20,817 | 23,495 | 23,280 | o |
| Mackinaw | Village | Tazewell | 1,582 | 1,950 | 1,960 | o |
| Macomb | City | McDonough | 18,554 | 19,294 | 19,254 | o |
| Macon | City | Macon | 1,278 | 1,138 | 1,148 | o |
| Madison | City | St. Clair/Madison | 4,539 | 3,891 | 3,947 | o |
| Maeystown | Village | Monroe | 138 | 157 | 157 | o |
| Magnolia | Village | Putnam | 279 | 260 | 254 | o |
| Mahomet | Village | Champaign | 5,257 | 7,259 | 7,513 | o |
| Makanda | Village | Jackson | 436 | 561 | 557 | o |
| Malden | Village | Bureau | 343 | 362 | 356 | o |
| Malta | Village | DeKalb | 956 | 1,164 | 1,155 | o |
| Manchester | Village | Scott | 354 | 292 | 290 | o |
| Manhattan | Village | Will | 3,341 | 7,051 | 7,136 | o |
| Manito | Village | Mason | 1,711 | 1,642 | 1,603 | o |
| Manlius | Village | Bureau | 357 | 359 | 353 | o |
| Mansfield | Village | Piatt | 948 | 906 | 888 | o |
| Manteno | Village | Kankakee | 6,494 | 9,204 | 9,153 | o |
| Maple Park | Village | DeKalb/Kane | 778 | 1,310 | 1,312 | o |
| Mapleton | Village | Peoria | 250 | 270 | 270 | o |
| Maquon | Village | Knox | 316 | 289 | 286 | o |
| Marengo | City | McHenry | 6,372 | 7,648 | 7,593 | o |
| Marietta | Village | Fulton | 149 | 112 | 111 | o |
| Marine | Village | Madison | 909 | 960 | 949 | o |
| Marion | City | Williamson/Johnson | 15,960 | 17,193 | 17,315 | o |
| Marissa | Village | St. Clair | 2,165 | 1,981 | 1,936 | o |
| Mark | Village | Putnam | 551 | 555 | 553 | o |
| Markham | City | Cook | 12,669 | 12,508 | 12,625 | o |
| Maroa | City | Macon | 1,698 | 1,801 | 1,790 | o |
| Marquette Heights | City | Tazewell | 2,801 | 2,824 | 2,821 | o |
| Marseilles | City | LaSalle | 4,645 | 5,117 | 5,070 | o |
| Marshall | City | Clark | 3,979 | 3,933 | 3,909 | o |
| Martinsville | City | Clark | 1,218 | 1,167 | 1,157 | o |
| Martinton | Village | Iroquois | 370 | 381 | 377 | o |
| Maryville | Village | Madison | 4,887 | 7,487 | 7,799 | o |
| Mascoutah | City | St. Clair | 5,679 | 7,483 | 7,853 | o |
| Mason | Town | Effingham | 410 | 345 | 343 | o |
| Mason City | City | Mason | 2,528 | 2,343 | 2,283 | o |
| Matherville | Village | Mercer | 772 | 723 | 710 | o |
| Matteson | Village | Cook/Will | 12,964 | 19,009 | 19,147 | o |
| Mattoon | City | Coles | 18,437 | 18,555 | 18,364 | o |
| Maunie | Village | White | 177 | 139 | 139 | o |
| Maywood | Village | Cook | 26,924 | 24,090 | 24,164 | o |
| Mazon | Village | Grundy | 902 | 1,015 | 1,009 | o |
| McClure | Village | Alexander | 481 | 402 | 379 | o |
| McCook | Village | Cook | 255 | 228 | 230 | o |
| McCullom Lake | Village | McHenry | 1,012 | 1,049 | 1,039 | o |
| McHenry | City | McHenry | 21,497 | 26,987 | 26,825 | o |
| McLean | Village | McLean | 809 | 830 | 829 | o |
| McLeansboro | City | Hamilton | 2,960 | 2,882 | 2,850 | o |
| McNabb | Village | Putnam | 310 | 285 | 278 | o |
| Mechanicsburg | Village | Sangamon | 464 | 590 | 603 | o |
| Media | Village | Henderson | 134 | 107 | 103 | o |
| Medora | Village | Macoupin/Jersey | 521 | 419 | 415 | o |
| Melrose Park | Village | Cook | 23,144 | 25,414 | 25,527 | o |
| Melvin | Village | Ford | 487 | 452 | 450 | o |
| Mendon | Village | Adams | 1,079 | 953 | 948 | o |
| Mendota | City | LaSalle | 7,279 | 7,372 | 7,397 | o |
| Menominee | Village | Jo Daviess | 226 | 248 | 247 | o |
| Meredosia | Village | Morgan | 1,046 | 1,044 | 1,035 | o |
| Merrionette Park | Village | Cook | 1,999 | 1,900 | 1,905 | o |
| Metamora | Village | Woodford | 2,782 | 3,637 | 3,682 | o |
| Metcalf | Village | Edgar | 220 | 189 | 186 | o |
| Metropolis | City | Massac | 6,624 | 6,570 | 6,482 | o |
| Mettawa | Village | Lake | 385 | 547 | 552 | o |
| Middletown | Village | Logan | 453 | 324 | 321 | o |
| Midlothian | Village | Cook | 14,428 | 14,819 | 14,896 | o |
| Milan | Village | Rock Island | 5,507 | 5,101 | 5,096 | o |
| Milford | Village | Iroquois | 1,396 | 1,306 | 1,278 | o |
| Mill Creek | Village | Union | 78 | 65 | 64 | o |
| Mill Shoals | Village | White/Wayne | 238 | 215 | 214 | o |
| Millbrook | Village | Kendall | 323 | 335 | 342 | o |
| Milledgeville | Village | Carroll | 1,040 | 1,032 | 1,009 | o |
| Millington | Village | Kendall/LaSalle | 502 | 665 | 667 | o |
| Millstadt | Village | St. Clair | 2,921 | 4,011 | 3,976 | o |
| Milton | Village | Pike | 287 | 271 | 269 | o |
| Mineral | Village | Bureau | 273 | 237 | 233 | o |
| Minier | Village | Tazewell | 1,247 | 1,252 | 1,254 | o |
| Minonk | City | Woodford | 2,190 | 2,078 | 2,072 | o |
| Minooka | Village | Grundy/Kendall/Will | 4,056 | 10,924 | 11,099 | o |
| Modesto | Village | Macoupin | 247 | 189 | 187 | o |
| Mokena | Village | Will | 14,286 | 18,738 | 19,042 | o |
| Moline | City | Rock Island | 43,561 | 43,490 | 43,259 | o |
| Momence | City | Kankakee | 3,182 | 3,310 | 3,289 | o |
| Monee | Village | Will | 2,951 | 5,148 | 5,150 | o |
| Monmouth | City | Warren | 9,793 | 9,444 | 9,476 | o |
| Monroe Center | Village | Ogle | 494 | 471 | 465 | o |
| Montgomery | Village | Kendall/Kane | 5,686 | 18,496 | 19,084 | o |
| Monticello | City | Piatt | 5,123 | 5,548 | 5,463 | o |
| Montrose | Village | Effingham/Cumberland | 264 | 201 | 200 | o |
| Morris | City | Grundy | 11,941 | 13,636 | 13,825 | o |
| Morrison | City | Whiteside | 4,440 | 4,188 | 4,141 | o |
| Morrisonville | Village | Christian | 1,047 | 1,056 | 1,057 | o |
| Morton | Village | Tazewell | 15,251 | 16,267 | 16,415 | o |
| Morton Grove | Village | Cook | 22,415 | 23,270 | 23,461 | o |
| Mound City | City | Pulaski | 694 | 595 | 576 | o |
| Mound Station | Village | Brown | 124 | 122 | 122 | o |
| Mounds | City | Pulaski | 1,115 | 810 | 787 | o |
| Mount Auburn | Village | Christian | 519 | 480 | 478 | o |
| Mount Carmel | City | Wabash | 8,086 | 7,284 | 7,140 | o |
| Mount Carroll | City | Carroll | 1,862 | 1,717 | 1,667 | o |
| Mount Clare | Village | Macoupin | 413 | 278 | 275 | o |
| Mount Erie | Village | Wayne | 104 | 88 | 87 | o |
| Mount Morris | Village | Ogle | 3,043 | 2,998 | 2,951 | o |
| Mount Olive | City | Macoupin | 2,167 | 2,106 | 2,075 | o |
| Mount Prospect | Village | Cook | 55,712 | 54,167 | 54,505 | o |
| Mount Pulaski | City | Logan | 1,700 | 1,566 | 1,546 | o |
| Mount Sterling | City | Brown | 2,085 | 2,025 | 2,009 | o |
| Mount Vernon | City | Jefferson | 16,331 | 15,283 | 15,218 | o |
| Mount Zion | Village | Macon | 4,880 | 5,833 | 5,875 | o |
| Moweaqua | Village | Shelby/Christian | 1,952 | 1,831 | 1,796 | o |
| Muddy | Village | Saline | 90 | 68 | 68 | o |
| Mulberry Grove | Village | Bond | 676 | 634 | 624 | o |
| Muncie | Village | Vermilion | 157 | 146 | 145 | o |
| Mundelein | Village | Lake | 30,834 | 31,064 | 31,249 | o |
| Murphysboro | City | Jackson | 8,851 | 7,970 | 7,894 | o |
| Murrayville | Village | Morgan | 644 | 587 | 580 | o |
| Naperville | City | DuPage/Will | 128,396 | 141,845 | 143,684 | o |
| Naplate | Village | LaSalle | 510 | 496 | 493 | o |
| Naples | Town | Scott | 137 | 130 | 129 | o |
| Nashville | City | Washington | 3,308 | 3,258 | 3,215 | o |
| Nason | City | Jefferson | 235 | 236 | 236 | o |
| Nauvoo | City | Hancock | 1,045 | 1,149 | 1,134 | o |
| Nebo | Village | Pike | 403 | 340 | 338 | o |
| Nelson | Village | Lee | 165 | 170 | 165 | o |
| Neoga | City | Cumberland | 1,913 | 1,636 | 1,628 | o |
| Neponset | Village | Bureau | 522 | 473 | 461 | o |
| New Athens | Village | St. Clair | 1,985 | 2,054 | 2,013 | o |
| New Baden | Village | St. Clair/Clinton | 2,960 | 3,349 | 3,361 | o |
| New Bedford | Village | Bureau | 100 | 75 | 74 | o |
| New Berlin | Village | Sangamon | 1,052 | 1,346 | 1,363 | o |
| New Boston | City | Mercer | 625 | 683 | 675 | o |
| New Burnside | Village | Johnson | 228 | 211 | 215 | o |
| New Canton | Town | Pike | 420 | 359 | 357 | o |
| New Douglas | Village | Madison | 343 | 319 | 318 | o |
| New Grand Chain | Village | Pulaski | 236 | 210 | 205 | o |
| New Haven | Village | Gallatin/White | 487 | 433 | 418 | o |
| New Holland | Village | Logan | 309 | 269 | 267 | o |
| New Lenox | Village | Will | 17,716 | 24,394 | 24,715 | o |
| New Milford | Village | Winnebago | 539 | 697 | 688 | o |
| New Minden | Village | Washington | 205 | 215 | 212 | o |
| New Salem | Village | Pike | 138 | 137 | 136 | o |
| Newark | Village | Kendall | 890 | 992 | 1,012 | o |
| Newman | City | Douglas | 970 | 865 | 857 | o |
| Newton | City | Jasper | 3,085 | 2,849 | 2,819 | o |
| Niantic | Village | Macon | 736 | 707 | 699 | o |
| Niles | Village | Cook | 29,912 | 29,803 | 29,962 | o |
| Nilwood | Town | Macoupin | 286 | 239 | 237 | o |
| Noble | Village | Richland | 746 | 677 | 678 | o |
| Nokomis | City | Montgomery | 2,375 | 2,256 | 2,214 | o |
| Nora | Village | Jo Daviess | 119 | 117 | 116 | o |
| Normal | Town | McLean | 45,505 | 52,533 | 53,837 | o |
| Norridge | Village | Cook | 14,664 | 14,572 | 14,653 | o |
| Norris | Village | Fulton | 193 | 213 | 211 | o |
| Norris City | Village | White | 1,069 | 1,275 | 1,268 | o |
| North Aurora | Village | Kane | 10,691 | 16,766 | 17,019 | o |
| North Barrington | Village | Lake | 2,871 | 3,034 | 3,042 | o |
| North Chicago | City | Lake | 36,004 | 32,572 | 29,667 | o |
| North City | Village | Franklin | 643 | 608 | 604 | o |
| North Henderson | Village | Mercer | 193 | 187 | 185 | o |
| North Pekin | Village | Tazewell | 1,467 | 1,569 | 1,593 | o |
| North Riverside | Village | Cook | 6,348 | 6,672 | 6,692 | o |
| North Utica | Village | LaSalle | 1,159 | 1,350 | 1,381 | o |
| Northbrook | Village | Cook | 33,478 | 33,168 | 33,477 | o |
| Northfield | Village | Cook | 5,589 | 5,420 | 5,470 | o |
| Northlake | City | Cook | 12,133 | 12,326 | 12,370 | o |
| Norwood | Village | Peoria | 478 | 478 | 479 | o |
| O'Fallon | City | St. Clair | 21,946 | 28,575 | 29,193 | o |
| Oak Brook | Village | Cook/DuPage | 8,436 | 7,883 | 7,991 | o |
| Oak Forest | City | Cook | 28,111 | 27,962 | 28,155 | o |
| Oak Grove | Village | Rock Island | ... | 596 | 590 | o |
| Oak Lawn | Village | Cook | 55,272 | 56,687 | 56,995 | o |
| Oak Park | Village | Cook | 52,518 | 51,878 | 52,015 | o |
| Oakbrook Terrace | City | DuPage | 2,277 | 2,134 | 2,155 | o |
| Oakdale | Village | Washington | 221 | 221 | 218 | o |
| Oakford | Village | Menard | 307 | 286 | 286 | o |
| Oakland | City | Coles | 1,008 | 880 | 881 | o |
| Oakwood | Village | Vermilion | 1,511 | 1,595 | 1,575 | o |
| Oakwood Hills | Village | McHenry | 2,124 | 2,083 | 2,084 | o |
| Oblong | Village | Crawford | 1,565 | 1,466 | 1,443 | o |
| Oconee | Village | Shelby | 202 | 180 | 178 | o |
| Odell | Village | Livingston | 1,017 | 1,046 | 1,038 | o |
| Odin | Village | Marion | 1,105 | 1,076 | 1,060 | o |
| Ogden | Village | Champaign | 772 | 810 | 808 | o |
| Oglesby | City | LaSalle | 3,605 | 3,791 | 3,750 | o |
| Ohio | Village | Bureau | 542 | 513 | 504 | o |
| Ohlman | Village | Montgomery | 49 | 135 | 133 | o |
| Okawville | Village | Washington | 1,349 | 1,434 | 1,422 | o |
| Old Mill Creek | Village | Lake | 198 | 178 | 180 | o |
| Old Ripley | Village | Bond | 129 | 108 | 107 | o |
| Old Shawneetown | Village | Gallatin | 287 | 193 | 188 | o |
| Olmsted | Village | Pulaski | 353 | 333 | 325 | o |
| Olney | City | Richland | 8,765 | 9,125 | 9,092 | o |
| Olympia Fields | Village | Cook | 4,708 | 4,988 | 5,033 | o |
| Omaha | Village | Gallatin | 263 | 266 | 259 | o |
| Onarga | Village | Iroquois | 1,429 | 1,368 | 1,338 | o |
| Oneida | City | Knox | 764 | 702 | 693 | o |
| Oquawka | Village | Henderson | 1,530 | 1,371 | 1,323 | o |
| Orangeville | Village | Stephenson | 718 | 793 | 779 | o |
| Oreana | Village | Macon | 890 | 875 | 866 | o |
| Oregon | City | Ogle | 3,998 | 3,721 | 3,660 | o |
| Orient | City | Franklin | 307 | 358 | 358 | o |
| Orion | Village | Henry | 1,718 | 1,861 | 1,858 | o |
| Orland Hills | Village | Cook | 6,786 | 7,149 | 7,206 | o |
| Orland Park | Village | Cook/Will | 51,078 | 56,767 | 57,392 | o |
| Oswego | Village | Kendall | 13,330 | 30,353 | 31,672 | o |
| Ottawa | City | LaSalle | 18,586 | 18,752 | 18,563 | o |
| Otterville | Town | Jersey | 120 | 126 | 123 | o |
| Owaneco | Village | Christian | 247 | 239 | 238 | o |
| Palatine | Village | Cook | 66,298 | 68,557 | 69,144 | o |
| Palestine | Village | Crawford | 1,385 | 1,369 | 1,345 | o |
| Palmer | Village | Christian | 251 | 229 | 228 | o |
| Palmyra | Village | Macoupin | 733 | 698 | 692 | o |
| Palos Heights | City | Cook | 11,295 | 12,515 | 12,590 | o |
| Palos Hills | City | Cook | 17,707 | 17,484 | 17,610 | o |
| Palos Park | Village | Cook | 4,721 | 4,847 | 4,895 | o |
| Pana | City | Christian/Shelby | 6,015 | 5,844 | 5,794 | o |
| Panama | Village | Bond/Montgomery | 318 | 343 | 339 | o |
| Panola | Village | Woodford | 33 | 45 | 45 | o |
| Papineau | Village | Iroquois | 218 | 171 | 168 | o |
| Paris | City | Edgar | 9,244 | 8,857 | 8,664 | o |
| Park City | City | Lake | 6,650 | 7,570 | 7,516 | o |
| Park Forest | Village | Cook/Will | 23,459 | 21,971 | 22,035 | o |
| Park Ridge | City | Cook | 37,827 | 37,480 | 37,721 | o |
| Parkersburg | Village | Richland | 237 | 199 | 199 | o |
| Patoka | Village | Marion | 634 | 584 | 574 | o |
| Paw Paw | Village | Lee | 862 | 870 | 842 | o |
| Pawnee | Village | Sangamon | 2,635 | 2,739 | 2,746 | o |
| Paxton | City | Ford | 4,621 | 4,473 | 4,448 | o |
| Payson | Village | Adams | 1,068 | 1,026 | 1,020 | o |
| Pearl | Village | Pike | 184 | 138 | 137 | o |
| Pearl City | Village | Stephenson | 794 | 838 | 823 | o |
| Pecatonica | Village | Winnebago | 2,004 | 2,203 | 2,170 | o |
| Pekin | City | Tazewell/Peoria | 33,980 | 34,094 | 34,084 | o |
| Peoria | City | Peoria | 112,964 | 115,021 | 115,687 | o |
| Peoria Heights | Village | Tazewell/Woodford/Peoria | 6,732 | 6,156 | 6,124 | o |
| Peotone | Village | Will | 3,409 | 4,142 | 4,157 | o |
| Percy | Village | Randolph | 927 | 970 | 949 | o |
| Perry | Village | Pike | 438 | 397 | 393 | o |
| Peru | City | LaSalle | 9,854 | 10,295 | 10,187 | o |
| Pesotum | Village | Champaign | 549 | 551 | 549 | o |
| Petersburg | City | Menard | 2,313 | 2,260 | 2,254 | o |
| Phillipstown | Village | White | 36 | 44 | 44 | o |
| Philo | Village | Champaign | 1,302 | 1,466 | 1,467 | o |
| Phoenix | Village | Cook | 2,205 | 1,964 | 1,974 | o |
| Pierron | Village | Madison/Bond | 634 | 600 | 590 | o |
| Pinckneyville | City | Perry | 5,495 | 5,648 | 5,598 | o |
| Pingree Grove | Village | Kane | 162 | 4,532 | 4,916 | o |
| Piper City | Village | Ford | 812 | 826 | 818 | o |
| Pittsburg | Village | Williamson | 580 | 572 | 566 | o |
| Pittsfield | City | Pike | 4,755 | 4,576 | 4,538 | o |
| Plainfield | Village | Will/Kendall | 13,183 | 39,836 | 40,466 | o |
| Plainville | Village | Adams | 267 | 264 | 264 | o |
| Plano | City | Kendall | 5,674 | 10,868 | 11,053 | o |
| Plattville | Village | Kendall | 225 | 242 | 247 | o |
| Pleasant Hill | Village | Pike | 1,073 | 966 | 960 | o |
| Pleasant Plains | Village | Sangamon | 772 | 802 | 806 | o |
| Plymouth | Village | Hancock/McDonough | 549 | 505 | 497 | o |
| Pocahontas | Village | Bond | 731 | 784 | 777 | o |
| Polo | City | Ogle | 2,470 | 2,355 | 2,313 | o |
| Pontiac | City | Livingston | 11,978 | 11,931 | 11,828 | o |
| Pontoon Beach | Village | Madison | 5,886 | 5,836 | 5,757 | o |
| Pontoosuc | Village | Hancock | 168 | 146 | 145 | o |
| Poplar Grove | Village | Boone | 1,876 | 5,021 | 5,096 | o |
| Port Barrington | Village | Lake/McHenry | 786 | 1,517 | 1,512 | o |
| Port Byron | Village | Rock Island | 1,537 | 1,647 | 1,662 | o |
| Posen | Village | Cook | 4,730 | 5,987 | 6,019 | o |
| Potomac | Village | Vermilion | 698 | 750 | 740 | o |
| Prairie City | Village | McDonough | 450 | 379 | 379 | o |
| Prairie du Rocher | Village | Randolph | 613 | 604 | 590 | o |
| Prairie Grove | Village | McHenry | 986 | 1,907 | 1,895 | o |
| Princeton | City | Bureau | 7,535 | 7,662 | 7,525 | o |
| Princeville | Village | Peoria | 1,661 | 1,738 | 1,735 | o |
| Prophetstown | City | Whiteside | 2,014 | 2,080 | 2,048 | o |
| Prospect Heights | City | Cook | 17,048 | 16,256 | 16,367 | o |
| Pulaski | Village | Pulaski | 273 | 206 | 201 | o |
| Quincy | City | Adams | 40,783 | 40,630 | 40,798 | o |
| Radom | Village | Washington | 222 | 220 | 217 | o |
| Raleigh | Village | Saline | 324 | 350 | 352 | o |
| Ramsey | Village | Fayette | 1,064 | 1,037 | 1,031 | o |
| Rankin | Village | Vermilion | 620 | 561 | 553 | o |
| Ransom | Village | LaSalle | 409 | 384 | 379 | o |
| Rantoul | Village | Champaign | 12,923 | 12,941 | 12,937 | o |
| Rapids City | Village | Rock Island | 942 | 959 | 961 | o |
| Raritan | Village | Henderson | 140 | 138 | 133 | o |
| Raymond | Village | Montgomery | 923 | 1,006 | 989 | o |
| Red Bud | City | Randolph | 3,504 | 3,698 | 3,633 | o |
| Reddick | Village | Livingston/Kankakee | 209 | 163 | 163 | o |
| Redmon | Village | Edgar | 200 | 173 | 170 | o |
| Reynolds | Village | Rock Island/Mercer | 516 | 539 | 534 | o |
| Richmond | Village | McHenry | 1,189 | 1,874 | 1,899 | o |
| Richton Park | Village | Cook | 12,667 | 13,646 | 13,741 | o |
| Richview | Village | Washington | 314 | 253 | 250 | o |
| Ridge Farm | Village | Vermilion | 916 | 882 | 872 | o |
| Ridgway | Village | Gallatin | 988 | 869 | 843 | o |
| Ridott | Village | Stephenson | 161 | 164 | 162 | o |
| Ringwood | Village | McHenry | 512 | 836 | 832 | o |
| Rio | Village | Knox | 230 | 220 | 218 | o |
| Ripley | Village | Brown | 105 | 86 | 86 | o |
| River Forest | Village | Cook | 11,640 | 11,172 | 11,216 | o |
| River Grove | Village | Cook | 10,715 | 10,227 | 10,274 | o |
| Riverdale | Village | Cook | 15,046 | 13,549 | 13,609 | o |
| Riverside | Village | Cook | 8,843 | 8,875 | 8,901 | o |
| Riverton | Village | Sangamon | 3,114 | 3,455 | 3,475 | o |
| Riverwoods | Village | Lake | 3,867 | 3,660 | 3,658 | o |
| Roanoke | Village | Woodford | 2,037 | 2,065 | 2,075 | o |
| Robbins | Village | Cook | 6,559 | 5,337 | 5,415 | o |
| Roberts | Village | Ford | 387 | 362 | 360 | o |
| Robinson | City | Crawford | 8,001 | 7,713 | 7,686 | o |
| Rochelle | City | Ogle | 9,670 | 9,576 | 9,533 | o |
| Rochester | Village | Sangamon | 2,875 | 3,689 | 3,766 | o |
| Rock City | Village | Stephenson | 328 | 315 | 314 | o |
| Rock Falls | City | Whiteside | 9,579 | 9,266 | 9,139 | o |
| Rock Island | City | Rock Island | 39,616 | 39,006 | 38,920 | o |
| Rockbridge | Village | Greene | 192 | 169 | 166 | o |
| Rockdale | Village | Will | 1,878 | 1,976 | 1,974 | o |
| Rockford | City | Winnebago | 151,365 | 152,891 | 150,843 | o |
| Rockton | Village | Winnebago | 5,405 | 7,685 | 7,635 | o |
| Rockwood | Village | Randolph | 53 | 42 | 41 | o |
| Rolling Meadows | City | Cook | 24,565 | 24,094 | 24,241 | o |
| Romeoville | Village | Will | 20,905 | 39,613 | 39,752 | o |
| Roodhouse | City | Greene | 2,228 | 1,814 | 1,772 | o |
| Roscoe | Village | Winnebago | 6,123 | 10,782 | 10,720 | o |
| Rose Hill | Village | Jasper | 73 | 80 | 79 | o |
| Roselle | Village | Cook/DuPage | 23,198 | 22,761 | 22,984 | o |
| Rosemont | Village | Cook | 4,284 | 4,202 | 4,230 | o |
| Roseville | Village | Warren | 1,072 | 989 | 987 | o |
| Rosiclare | City | Hardin | 1,230 | 1,160 | 1,142 | o |
| Rossville | Village | Vermilion | 1,217 | 1,331 | 1,314 | o |
| Round Lake | Village | Lake | 5,819 | 18,350 | 18,470 | o |
| Round Lake Beach | Village | Lake | 26,070 | 28,175 | 28,116 | o |
| Round Lake Heights | Village | Lake | 1,325 | 2,735 | 2,731 | o |
| Round Lake Park | Village | Lake | 6,046 | 7,485 | 7,441 | o |
| Roxana | Village | Madison | 1,564 | 1,542 | 1,516 | o |
| Royal | Village | Champaign | 278 | 293 | 294 | o |
| Royal Lakes | Village | Macoupin | 194 | 197 | 195 | o |
| Royalton | Village | Franklin | 1,129 | 1,151 | 1,147 | o |
| Ruma | Village | Randolph | 283 | 317 | 318 | o |
| Rushville | City | Schuyler | 3,219 | 3,209 | 3,167 | o |
| Russellville | Village | Lawrence | 121 | 94 | 93 | o |
| Rutland | Village | LaSalle | 340 | 318 | 316 | o |
| Sadorus | Village | Champaign | 431 | 416 | 413 | o |
| Sailor Springs | Village | Clay | 128 | 95 | 95 | o |
| Salem | City | Marion | 7,987 | 7,480 | 7,381 | o |
| Sammons Point | Village | Kankakee | 285 | 279 | 281 | o |
| San Jose | Village | Mason/Logan | 711 | 642 | 632 | o |
| Sandoval | Village | Marion | 1,433 | 1,274 | 1,253 | o |
| Sandwich | City | Kendall/DeKalb | 6,526 | 7,421 | 7,377 | o |
| Sauget | Village | St. Clair | 198 | 159 | 156 | o |
| Sauk Village | Village | Cook/Will | 10,335 | 10,506 | 10,559 | o |
| Saunemin | Village | Livingston | 438 | 420 | 417 | o |
| Savanna | City | Carroll | 3,529 | 3,063 | 2,972 | o |
| Savoy | Village | Champaign | 4,554 | 7,280 | 7,494 | o |
| Sawyerville | Village | Macoupin | 281 | 279 | 276 | o |
| Saybrook | Village | McLean | 760 | 693 | 692 | o |
| Scales Mound | Village | Jo Daviess | 391 | 376 | 372 | o |
| Schaumburg | Village | Cook/DuPage | 75,390 | 74,227 | 74,781 | o |
| Schiller Park | Village | Cook | 11,791 | 11,793 | 11,858 | o |
| Schram City | Village | Montgomery | 647 | 586 | 577 | o |
| Sciota | Village | McDonough | 57 | 61 | 61 | o |
| Scottville | Village | Macoupin | 143 | 116 | 115 | o |
| Seaton | Village | Mercer | 245 | 222 | 220 | o |
| Seatonville | Village | Bureau | 303 | 314 | 310 | o |
| Secor | Village | Woodford | 382 | 373 | 369 | o |
| Seneca | Village | Grundy/LaSalle | 2,164 | 2,361 | 2,337 | o |
| Sesser | City | Franklin | 2,105 | 1,931 | 1,924 | o |
| Shabbona | Village | DeKalb | 970 | 925 | 918 | o |
| Shannon | Village | Carroll | 848 | 757 | 736 | o |
| Shawneetown | City | Gallatin | 1,410 | 1,239 | 1,204 | o |
| Sheffield | Village | Bureau | 950 | 926 | 911 | o |
| Shelbyville | City | Shelby | 5,024 | 4,698 | 4,717 | o |
| Sheldon | Village | Iroquois | 1,240 | 1,070 | 1,045 | o |
| Sheridan | Village | LaSalle | 2,429 | 2,137 | 2,127 | o |
| Sherman | Village | Sangamon | 2,885 | 4,148 | 4,339 | o |
| Sherrard | Village | Mercer | 712 | 640 | 631 | o |
| Shiloh | Village | St. Clair | 8,625 | 12,755 | 13,107 | o |
| Shipman | Town | Macoupin | 660 | 624 | 618 | o |
| Shorewood | Village | Will | 7,958 | 15,615 | 16,211 | o |
| Shumway | Village | Effingham | 225 | 202 | 201 | o |
| Sibley | Village | Ford | 335 | 272 | 271 | o |
| Sidell | Village | Vermilion | 623 | 617 | 608 | o |
| Sidney | Village | Champaign | 1,117 | 1,233 | 1,233 | o |
| Sigel | Town | Shelby | 384 | 373 | 368 | o |
| Silvis | City | Rock Island | 7,385 | 7,484 | 7,501 | o |
| Simpson | Village | Johnson | 58 | 60 | 61 | o |
| Sims | Village | Wayne | 280 | 252 | 251 | o |
| Skokie | Village | Cook | 63,274 | 64,784 | 65,074 | o |
| Sleepy Hollow | Village | Kane | 3,567 | 3,304 | 3,339 | o |
| Smithboro | Village | Bond | 203 | 177 | 175 | o |
| Smithfield | Village | Fulton | 234 | 230 | 228 | o |
| Smithton | Village | St. Clair | 2,374 | 3,693 | 3,743 | o |
| Somonauk | Village | DeKalb/LaSalle | 1,465 | 1,893 | 1,876 | o |
| Sorento | Village | Bond | 591 | 498 | 489 | o |
| South Barrington | Village | Cook | 3,770 | 4,565 | 4,656 | o |
| South Beloit | City | Winnebago | 5,409 | 7,892 | 7,825 | o |
| South Chicago Heights | Village | Cook | 3,974 | 4,139 | 4,157 | o |
| South Elgin | Village | Kane | 16,049 | 21,985 | 22,224 | o |
| South Holland | Village | Cook | 22,420 | 22,030 | 22,145 | o |
| South Jacksonville | Village | Morgan | 3,454 | 3,331 | 3,304 | o |
| South Pekin | Village | Tazewell | 1,154 | 1,146 | 1,148 | o |
| South Roxana | Village | Madison | 1,881 | 2,053 | 2,021 | o |
| South Wilmington | Village | Grundy | 654 | 681 | 676 | o |
| Southern View | Village | Sangamon | 1,745 | 1,661 | 1,659 | o |
| Sparland | Village | Marshall | 510 | 406 | 396 | o |
| Sparta | City | Randolph | 4,602 | 4,302 | 4,295 | o |
| Spaulding | Village | Sangamon | 647 | 873 | 872 | o |
| Spillertown | Village | Williamson | 212 | 203 | 203 | o |
| Spring Bay | Village | Woodford | 435 | 450 | 448 | o |
| Spring Grove | Village | McHenry | 3,858 | 5,772 | 5,763 | o |
| Spring Valley | City | Bureau | 5,468 | 5,558 | 5,442 | o |
| Springerton | Village | White | 134 | 110 | 110 | o |
| Springfield | City | Sangamon | 112,514 | 116,249 | 117,126 | o |
| St. Anne | Village | Kankakee | 1,226 | 1,259 | 1,250 | o |
| St. Augustine | Village | Knox | 148 | 122 | 121 | o |
| St. Charles | City | DuPage/Kane | 27,943 | 32,974 | 33,327 | o |
| St. David | Village | Fulton | 598 | 589 | 579 | o |
| St. Elmo | City | Fayette | 1,459 | 1,426 | 1,417 | o |
| St. Francisville | City | Lawrence | 764 | 697 | 685 | o |
| St. Jacob | Village | Madison | 977 | 1,098 | 1,127 | o |
| St. Johns | Village | Perry | 236 | 219 | 215 | o |
| St. Joseph | Village | Champaign | 2,895 | 4,002 | 4,008 | o |
| St. Libory | Village | St. Clair | 583 | 615 | 610 | o |
| St. Peter | Village | Fayette | 386 | 359 | 358 | o |
| Standard | Village | Putnam | 259 | 220 | 215 | o |
| Standard City | Village | Macoupin | 136 | 152 | 151 | o |
| Stanford | Village | McLean | 698 | 596 | 594 | o |
| Staunton | City | Macoupin | 5,158 | 5,197 | 5,143 | o |
| Ste. Marie | Village | Jasper | 266 | 244 | 242 | o |
| Steeleville | Village | Randolph | 2,057 | 2,083 | 2,031 | o |
| Steger | Village | Cook/Will | 9,641 | 9,570 | 9,591 | o |
| Sterling | City | Whiteside | 15,951 | 15,439 | 15,243 | o |
| Steward | Village | Lee | 271 | 256 | 248 | o |
| Stewardson | Village | Shelby | 758 | 734 | 720 | o |
| Stickney | Village | Cook | 6,150 | 6,786 | 6,817 | o |
| Stillman Valley | Village | Ogle | 1,036 | 1,120 | 1,103 | o |
| Stockton | Village | Jo Daviess | 1,937 | 1,862 | 1,839 | o |
| Stone Park | Village | Cook | 5,098 | 4,946 | 4,965 | o |
| Stonefort | Village | Williamson/Saline | 292 | 297 | 298 | o |
| Stonington | Village | Christian | 960 | 932 | 924 | o |
| Stoy | Village | Crawford | 100 | 108 | 107 | o |
| Strasburg | Village | Shelby | 595 | 467 | 457 | o |
| Strawn | Village | Livingston | 105 | 100 | 99 | o |
| Streamwood | Village | Cook | 36,490 | 39,858 | 40,238 | o |
| Streator | City | Livingston/LaSalle | 14,057 | 13,703 | 13,557 | o |
| Stronghurst | Village | Henderson | 893 | 883 | 846 | o |
| Sublette | Village | Lee | 456 | 449 | 433 | o |
| Sugar Grove | Village | Kane | 3,977 | 8,997 | 9,108 | o |
| Sullivan | City | Moultrie | 4,363 | 4,440 | 4,471 | o |
| Summerfield | Village | St. Clair | 483 | 451 | 439 | o |
| Summit | Village | Cook | 10,637 | 11,054 | 11,446 | o |
| Sumner | City | Lawrence | 1,011 | 3,174 | 3,161 | o |
| Sun River Terrace | Village | Kankakee | 435 | 528 | 530 | o |
| Swansea | Village | St. Clair | 11,048 | 13,430 | 13,758 | o |
| Sycamore | City | DeKalb | 12,075 | 17,519 | 17,481 | o |
| Symerton | Village | Will | 112 | 87 | 90 | o |
| Table Grove | Village | Fulton | 389 | 416 | 412 | o |
| Tallula | Village | Menard | 638 | 488 | 490 | o |
| Tamaroa | Village | Perry | 760 | 638 | 628 | o |
| Tamms | Village | Alexander | ... | 1,043 | 1,004 | o |
| Tampico | Village | Whiteside | 776 | 790 | 778 | o |
| Taylor Springs | Village | Montgomery | 576 | 690 | 681 | o |
| Taylorville | City | Christian | 12,584 | 11,250 | 11,180 | o |
| Tennessee | Village | McDonough | 147 | 115 | 115 | o |
| Teutopolis | Village | Effingham | 1,567 | 1,530 | 1,547 | o |
| Thawville | Village | Iroquois | 254 | 241 | 256 | o |
| Thayer | Village | Sangamon | 771 | 693 | 694 | o |
| Thebes | Village | Alexander | 455 | 437 | 408 | o |
| Third Lake | Village | Lake | 1,337 | 1,182 | 1,183 | o |
| Thomasboro | Village | Champaign | 1,219 | 1,126 | 1,133 | o |
| Thompsonville | Village | Franklin | 559 | 543 | 541 | o |
| Thomson | Village | Carroll | 560 | 590 | 577 | o |
| Thornton | Village | Cook | 2,516 | 2,338 | 2,345 | o |
| Tilden | Village | Randolph | 913 | 934 | 913 | o |
| Tilton | Village | Vermilion | 3,039 | 2,724 | 2,686 | o |
| Timberlane | Village | Boone | 249 | 934 | 943 | o |
| Time | Village | Pike | 29 | 23 | 23 | o |
| Tinley Park | Village | Cook/Will | 48,741 | 56,701 | 57,144 | o |
| Tiskilwa | Village | Bureau | 795 | 829 | 806 | o |
| Toledo | Village | Cumberland | 1,224 | 1,238 | 1,229 | o |
| Tolono | Village | Champaign | 2,740 | 3,447 | 3,464 | o |
| Toluca | City | Marshall | 1,343 | 1,414 | 1,375 | o |
| Tonica | Village | LaSalle | 675 | 768 | 760 | o |
| Topeka | Village | Mason | 89 | 76 | 75 | o |
| Toulon | City | Stark | 1,388 | 1,292 | 1,282 | o |
| Tovey | Village | Christian | 524 | 512 | 506 | o |
| Towanda | Village | McLean | 505 | 480 | 478 | o |
| Tower Hill | Village | Shelby | 615 | 611 | 605 | o |
| Tower Lakes | Village | Lake | 1,248 | 1,283 | 1,278 | o |
| Tremont | Village | Tazewell | 2,033 | 2,236 | 2,235 | o |
| Trenton | City | Clinton | 2,582 | 2,715 | 2,721 | o |
| Trout Valley | Village | McHenry | 574 | 537 | 534 | o |
| Troy | City | Madison | 8,493 | 9,888 | 9,946 | o |
| Troy Grove | Village | LaSalle | 292 | 250 | 248 | o |
| Tuscola | City | Douglas | 4,431 | 4,480 | 4,450 | o |
| Ullin | Village | Pulaski | 788 | 463 | 450 | o |
| Union | Village | McHenry | 577 | 580 | 572 | o |
| Union Hill | Village | Kankakee | 61 | 58 | 58 | o |
| University Park | Village | Cook/Will | 6,661 | 7,126 | 7,139 | o |
| Urbana | City | Champaign | 37,075 | 41,440 | 41,581 | o |
| Ursa | Village | Adams | 602 | 626 | 626 | o |
| Valier | Village | Franklin | 665 | 669 | 667 | o |
| Valley City | Village | Pike | 11 | 13 | 13 | o |
| Valmeyer | Village | Monroe | 612 | 1,263 | 1,271 | o |
| Vandalia | City | Fayette | 7,027 | 7,042 | 7,012 | o |
| Varna | Village | Marshall | 425 | 384 | 375 | o |
| Venedy | Village | Washington | 137 | 138 | 136 | o |
| Venice | City | Madison | 2,538 | 1,890 | 1,908 | o |
| Vergennes | Village | Jackson | 330 | 298 | 297 | o |
| Vermilion | Village | Edgar | 242 | 225 | 222 | o |
| Vermont | Village | Fulton | 777 | 667 | 663 | o |
| Vernon | Village | Marion | 192 | 129 | 128 | o |
| Vernon Hills | Village | Lake | 20,101 | 25,107 | 25,678 | o |
| Verona | Village | Grundy | 253 | 215 | 215 | o |
| Versailles | Village | Brown | 569 | 478 | 473 | o |
| Victoria | Village | Knox | 333 | 316 | 313 | o |
| Vienna | City | Johnson | 1,247 | 1,434 | 1,456 | o |
| Villa Grove | City | Douglas | 2,534 | 2,537 | 2,517 | o |
| Villa Park | Village | DuPage | 22,474 | 21,904 | 22,052 | o |
| Viola | Village | Mercer | 947 | 955 | 947 | o |
| Virden | City | Sangamon/Macoupin | 3,420 | 3,529 | 3,492 | o |
| Virgil | Village | Kane | 337 | 329 | 333 | o |
| Virginia | City | Cass | 1,735 | 1,611 | 1,574 | o |
| Volo | Village | Lake | 226 | 2,925 | 3,363 | o |
| Wadsworth | Village | Lake | 3,447 | 3,756 | 3,750 | o |
| Waggoner | Village | Montgomery | 244 | 266 | 262 | o |
| Walnut | Village | Bureau | 1,456 | 1,416 | 1,387 | o |
| Walnut Hill | Village | Marion | 109 | 108 | 107 | o |
| Walshville | Village | Montgomery | 89 | 64 | 63 | o |
| Waltonville | Village | Jefferson | 414 | 434 | 434 | o |
| Wamac | City | Washington/Marion/Clinton | 1,375 | 1,185 | 1,170 | o |
| Wapella | Village | De Witt | 645 | 558 | 552 | o |
| Warren | Village | Jo Daviess | 1,501 | 1,428 | 1,417 | o |
| Warrensburg | Village | Macon | 1,287 | 1,210 | 1,200 | o |
| Warrenville | City | DuPage | 13,465 | 13,191 | 13,316 | o |
| Warsaw | City | Hancock | 1,798 | 1,607 | 1,583 | o |
| Washburn | Village | Woodford/Marshall | 1,155 | 1,155 | 1,150 | o |
| Washington | City | Tazewell | 11,547 | 15,134 | 15,410 | o |
| Washington Park | Village | St. Clair | 5,932 | 4,196 | 4,119 | o |
| Wataga | Village | Knox | 872 | 843 | 833 | o |
| Waterloo | City | Monroe | 8,110 | 9,816 | 9,947 | o |
| Waterman | Village | DeKalb | 1,242 | 1,506 | 1,491 | o |
| Watseka | City | Iroquois | 5,715 | 5,297 | 5,199 | o |
| Watson | Village | Effingham | 758 | 754 | 750 | o |
| Wauconda | Village | Lake | 9,461 | 13,603 | 13,753 | o |
| Waukegan | City | Lake | 87,925 | 89,078 | 88,862 | o |
| Waverly | City | Morgan | 1,352 | 1,307 | 1,293 | o |
| Wayne | Village | DuPage/Kane | 2,176 | 2,431 | 2,467 | o |
| Wayne City | Village | Wayne | 1,102 | 1,032 | 1,022 | o |
| Waynesville | Village | De Witt | 450 | 434 | 431 | o |
| Weldon | Village | De Witt | 441 | 429 | 427 | o |
| Wellington | Village | Iroquois | 258 | 242 | 238 | o |
| Wenona | City | Marshall/LaSalle | 1,052 | 1,056 | 1,025 | o |
| Wenonah | Village | Montgomery | 44 | 37 | 36 | o |
| West Brooklyn | Village | Lee | 174 | 142 | 138 | o |
| West Chicago | City | DuPage | 23,491 | 27,298 | 27,576 | o |
| West City | Village | Franklin | 729 | 661 | 661 | o |
| West Dundee | Village | Kane | 5,420 | 7,331 | 7,393 | o |
| West Frankfort | City | Franklin | 8,317 | 8,177 | 8,139 | o |
| West Peoria | City | Peoria | 4,787 | 4,466 | 4,469 | o |
| West Point | Village | Hancock | 196 | 178 | 177 | o |
| West Salem | Village | Edwards | 1,011 | 897 | 892 | o |
| Westchester | Village | Cook | 16,816 | 16,718 | 16,792 | o |
| Western Springs | Village | Cook | 12,467 | 12,975 | 13,105 | o |
| Westfield | Village | Clark | 678 | 601 | 594 | o |
| Westmont | Village | DuPage | 25,081 | 24,670 | 24,898 | o |
| Westville | Village | Vermilion | 3,172 | 3,202 | 3,171 | o |
| Wheaton | City | DuPage | 55,339 | 52,978 | 53,469 | o |
| Wheeler | Village | Jasper | 131 | 147 | 146 | o |
| Wheeling | Village | Lake/Cook | 36,256 | 37,648 | 37,946 | o |
| White City | Village | Macoupin | 207 | 232 | 230 | o |
| White Hall | City | Greene | 2,637 | 2,520 | 2,463 | o |
| Whiteash | Village | Williamson | 242 | 241 | 241 | o |
| Williamsfield | Village | Knox | 607 | 578 | 571 | o |
| Williamson | Village | Madison | 255 | 230 | 228 | o |
| Williamsville | Village | Sangamon | 1,438 | 1,476 | 1,494 | o |
| Willisville | Village | Perry | 711 | 633 | 623 | o |
| Willow Hill | Village | Jasper | 251 | 230 | 228 | o |
| Willow Springs | Village | Cook | 4,954 | 5,662 | 5,700 | o |
| Willowbrook | Village | DuPage | 8,766 | 8,540 | 8,628 | o |
| Wilmette | Village | Cook | 27,605 | 27,087 | 27,294 | o |
| Wilmington | Village | Greene | 131 | 142 | 139 | o |
| Wilmington | City | Will | 5,198 | 5,720 | 5,742 | o |
| Wilsonville | Village | Macoupin | 606 | 586 | 578 | o |
| Winchester | City | Scott | 1,665 | 1,593 | 1,573 | o |
| Windsor | Village | Mercer | 722 | 748 | 735 | o |
| Windsor | City | Shelby | 1,179 | 1,187 | 1,180 | o |
| Winfield | Village | DuPage | 8,862 | 9,080 | 9,416 | o |
| Winnebago | Village | Winnebago | 2,965 | 3,101 | 3,066 | o |
| Winnetka | Village | Cook | 12,584 | 12,187 | 12,370 | o |
| Winslow | Village | Stephenson | 343 | 338 | 334 | o |
| Winthrop Harbor | Village | Lake | 6,717 | 6,757 | 6,737 | o |
| Witt | City | Montgomery | 991 | 903 | 885 | o |
| Wonder Lake | Village | McHenry | 2,882 | 4,013 | 3,985 | o |
| Wood Dale | City | DuPage | 13,539 | 13,770 | 13,911 | o |
| Wood River | City | Madison | 11,270 | 10,657 | 10,493 | o |
| Woodhull | Village | Henry | 810 | 811 | 805 | o |
| Woodland | Village | Iroquois | 321 | 324 | 324 | o |
| Woodlawn | Village | Jefferson | 736 | 698 | 699 | o |
| Woodridge | Village | DuPage/Will | 30,875 | 32,971 | 33,305 | o |
| Woodson | Village | Morgan | 550 | 512 | 510 | o |
| Woodstock | City | McHenry | 20,096 | 24,770 | 25,084 | o |
| Worden | Village | Madison | 896 | 1,044 | 1,036 | o |
| Worth | Village | Cook | 10,880 | 10,789 | 10,844 | o |
| Wyanet | Village | Bureau | 1,024 | 991 | 975 | o |
| Wyoming | City | Stark | 1,452 | 1,429 | 1,414 | o |
| Xenia | Village | Clay | 401 | 392 | 392 | o |
| Yale | Village | Jasper | 105 | 86 | 85 | o |
| Yates City | Village | Knox | 729 | 691 | 682 | o |
| Yorkville | City | Kendall | 6,451 | 16,928 | 17,495 | o |
| Zeigler | City | Franklin | 1,669 | 1,801 | 1,786 | o |
| Zion | City | Lake | 23,312 | 24,409 | 24,362 | o |
Source: US Census Bureau (web).
2000 population of places in the boundaries of 2010. Later population figures for places in the boundaries of 2012.
2013-06-03WWW.CITYPOPULATION.DE