USA: Connecticut
Planning Regions
The population of all planning regions in Connecticut by census years.
| Name | Status | Population Census 1990-04-01 | Population Census 2000-04-01 | Population Census 2010-04-01 | Population Census 2020-04-01 | |
|---|---|---|---|---|---|---|
| Capitol | Planning Region | 910,373 | 922,444 | 973,976 | 976,275 | → |
| Greater Bridgeport | Planning Region | 299,817 | 307,632 | 318,006 | 325,774 | → |
| Lower Connecticut River Valley | Planning Region | 151,742 | 164,510 | 175,686 | 174,225 | → |
| Naugatuck Valley | Planning Region | 413,895 | 428,982 | 448,846 | 450,435 | → |
| Northeastern Connecticut | Planning Region | 83,253 | 89,438 | 96,622 | 95,336 | → |
| Northwest Hills | Planning Region | 107,227 | 110,145 | 115,268 | 112,465 | → |
| South Central Connecticut | Planning Region | 536,837 | 546,687 | 569,915 | 570,455 | → |
| Southeastern Connecticut | Planning Region | 266,282 | 270,035 | 286,671 | 280,428 | → |
| Western Connecticut | Planning Region | 517,690 | 565,777 | 589,161 | 620,519 | → |
| Connecticut | State | 3,287,116 | 3,405,565 | 3,574,097 | 3,605,912 |
Contents: Places
The population of all places in Connecticut by census years.
icon links to further information about a selected place including its population structure (gender, age groups, age distribution, urbanization, »race«, ethnicity).| Name | Status | County | Population Census 1990-04-01 | Population Census 2000-04-01 | Population Census 2010-04-01 | Population Census 2020-04-01 | |
|---|---|---|---|---|---|---|---|
| Ansonia | City | Naugatuck Valley | 18,376 | 18,573 | 19,278 | 18,913 | → |
| Ball Pond | Census-Designated Place | Western Connecticut | 1,867 | 2,210 | 2,064 | 2,189 | → |
| Baltic | Census-Designated Place | Southeastern Connecticut | 1,200 | 1,058 | 1,250 | 1,186 | → |
| Bantam | Borough | Northwest Hills | 786 | 805 | 759 | 754 | → |
| Bethel | Census-Designated Place | Western Connecticut | 9,391 | 9,796 | 10,335 | 11,582 | → |
| Bethlehem Village | Census-Designated Place | Naugatuck Valley | 1,976 | 2,022 | 2,021 | 1,970 | → |
| Bigelow Corners | Census-Designated Place | Western Connecticut | 165 | 554 | 138 | 617 | → |
| Blue Hills | Census-Designated Place | Capitol | 3,206 | 3,020 | 2,901 | 2,762 | → |
| Bogus Hill | Census-Designated Place | Western Connecticut | 82 | 101 | 39 | 100 | → |
| Botsford | Census-Designated Place | Western Connecticut | 384 | 438 | 533 | 499 | → |
| Branchville | Census-Designated Place | Western Connecticut | 154 | 141 | 169 | 262 | → |
| Branford Center | Census-Designated Place | South Central Connecticut | 5,688 | 5,735 | 5,819 | 6,026 | → |
| Bridgeport | City | Greater Bridgeport | 141,719 | 139,526 | 144,247 | 148,642 | → |
| Bridgewater | Census-Designated Place | Western Connecticut | 42 | 48 | 112 | 133 | → |
| Bristol | City | Naugatuck Valley | 60,645 | 60,209 | 60,491 | 60,847 | → |
| Broad Brook | Census-Designated Place | Capitol | 3,585 | 3,469 | 4,069 | 3,998 | → |
| Brookfield Center | Census-Designated Place | Western Connecticut | 432 | 573 | 424 | 545 | → |
| Brooklyn | Census-Designated Place | Northeastern Connecticut | 797 | 1,044 | 981 | 952 | → |
| Byram | Census-Designated Place | Western Connecticut | 3,562 | 3,636 | 4,146 | 4,493 | → |
| Canaan | Census-Designated Place | Northwest Hills | 1,194 | 1,288 | 1,212 | 1,190 | → |
| Candlewood Isle | Census-Designated Place | Western Connecticut | 419 | 249 | 386 | 491 | → |
| Candlewood Knolls | Census-Designated Place | Western Connecticut | 179 | 196 | 165 | 255 | → |
| Candlewood Lake Club | Census-Designated Place | Western Connecticut | 269 | 333 | 346 | 305 | → |
| Candlewood Orchards | Census-Designated Place | Western Connecticut | 739 | 836 | 701 | 752 | → |
| Candlewood Shores | Census-Designated Place | Western Connecticut | 673 | 758 | 704 | 665 | → |
| Cannondale | Census-Designated Place | Western Connecticut | ... | ... | 141 | 396 | → |
| Canton Valley | Census-Designated Place | Capitol | 1,563 | 1,565 | 1,580 | 1,623 | → |
| Cheshire Village | Census-Designated Place | Naugatuck Valley | 6,030 | 6,241 | 6,185 | 6,499 | → |
| Chester Center | Census-Designated Place | Lower Connecticut River Valley | 1,792 | 1,798 | 1,808 | 1,720 | → |
| Chimney Point | Census-Designated Place | Western Connecticut | ... | 54 | 24 | 133 | → |
| Clinton | Census-Designated Place | Lower Connecticut River Valley | 3,439 | 3,516 | 3,368 | 3,441 | → |
| Colchester | Census-Designated Place | Southeastern Connecticut | 4,024 | 4,574 | 4,781 | 4,700 | → |
| Coleytown | Census-Designated Place | Western Connecticut | 3,296 | 3,438 | 3,470 | 3,522 | → |
| Collinsville | Census-Designated Place | Capitol | 2,591 | 2,686 | 3,746 | 3,721 | → |
| Compo | Census-Designated Place | Western Connecticut | 3,140 | 3,262 | 3,364 | 3,354 | → |
| Conning Towers-Nautilus Park | Census-Designated Place | Southeastern Connecticut | 16,745 | 10,241 | 8,834 | 8,870 | → |
| Cornwall | Census-Designated Place | Northwest Hills | 99 | 79 | 80 | 120 | → |
| Cornwall Bridge | Census-Designated Place | Northwest Hills | 137 | 131 | 159 | 287 | → |
| Cos Cob | Census-Designated Place | Western Connecticut | 6,540 | 6,428 | 6,770 | 6,873 | → |
| Coventry Lake | Census-Designated Place | Capitol | 3,093 | 3,083 | 3,163 | 2,823 | → |
| Crystal Lake | Census-Designated Place | Capitol | 1,175 | 1,459 | 2,153 | 2,152 | → |
| Danbury | City | Western Connecticut | 65,627 | 74,822 | 80,834 | 86,511 | → |
| Daniels Farm | Census-Designated Place | Greater Bridgeport | 5,589 | 5,727 | 6,052 | 6,150 | → |
| Danielson | Borough | Northeastern Connecticut | 4,397 | 4,275 | 4,026 | 4,166 | → |
| Darien Downtown | Census-Designated Place | Western Connecticut | 832 | 1,068 | 964 | 1,147 | → |
| Dayville | Census-Designated Place | Northeastern Connecticut | 740 | 590 | 687 | 631 | → |
| Deep River Center | Census-Designated Place | Lower Connecticut River Valley | 2,912 | 2,929 | 2,913 | 2,765 | → |
| Derby | City | Naugatuck Valley | 12,241 | 12,372 | 12,876 | 12,327 | → |
| Dodgingtown | Census-Designated Place | Western Connecticut | 292 | 341 | 350 | 380 | → |
| Durham | Census-Designated Place | Lower Connecticut River Valley | 3,360 | 3,659 | 3,890 | 3,771 | → |
| East Brooklyn | Census-Designated Place | Northeastern Connecticut | 1,968 | 1,996 | 2,193 | 2,205 | → |
| East Hampton | Census-Designated Place | Lower Connecticut River Valley | 2,312 | 2,475 | 2,931 | 2,960 | → |
| East Hartford | Census-Designated Place | Capitol | 50,452 | 49,575 | 51,252 | 51,045 | → |
| East Haven | Census-Designated Place | South Central Connecticut | 26,144 | 28,189 | 29,257 | 27,923 | → |
| East Village | Census-Designated Place | Greater Bridgeport | 3,534 | 4,088 | 4,222 | 4,057 | → |
| Essex Village | Census-Designated Place | Lower Connecticut River Valley | 2,500 | 2,573 | 2,495 | 2,583 | → |
| Fairfield University | Census-Designated Place | Greater Bridgeport | 2,464 | 2,469 | 2,773 | 2,884 | → |
| Falls Village | Census-Designated Place | Northwest Hills | 410 | 285 | 538 | 383 | → |
| Fenwick | Borough | Lower Connecticut River Valley | 89 | 52 | 43 | 43 | → |
| Gales Ferry | Census-Designated Place | Southeastern Connecticut | 1,240 | 1,094 | 1,162 | 1,159 | → |
| Gaylordsville | Census-Designated Place | Western Connecticut | 483 | 664 | 551 | 603 | → |
| Georgetown | Census-Designated Place | Western Connecticut | 1,694 | 1,650 | 1,805 | 1,832 | → |
| Glastonbury Center | Census-Designated Place | Capitol | 7,406 | 7,157 | 7,387 | 8,459 | → |
| Glenville | Census-Designated Place | Western Connecticut | 2,158 | 2,244 | 2,327 | 2,762 | → |
| Greens Farms | Census-Designated Place | Western Connecticut | 2,900 | 3,142 | 3,093 | 3,125 | → |
| Greenwich | Census-Designated Place | Western Connecticut | 13,496 | 14,127 | 12,942 | 13,836 | → |
| Groton | City | Southeastern Connecticut | 9,853 | 9,300 | 9,384 | 9,385 | → |
| Groton Long Point | Borough | Southeastern Connecticut | 603 | 672 | 518 | 519 | → |
| Guilford Center | Census-Designated Place | South Central Connecticut | 2,588 | 2,603 | 2,597 | 2,586 | → |
| Hartford | City | Capitol | 137,382 | 124,175 | 124,756 | 121,019 | → |
| Hawleyville | Census-Designated Place | Western Connecticut | 88 | 70 | 85 | 151 | → |
| Hazardville | Census-Designated Place | Capitol | 6,425 | 7,821 | 6,308 | 6,870 | → |
| Heritage Village | Census-Designated Place | Naugatuck Valley | 3,050 | 4,340 | 3,957 | 5,091 | → |
| Higganum | Census-Designated Place | Lower Connecticut River Valley | 1,911 | 2,057 | 2,131 | 2,089 | → |
| Indian Field | Census-Designated Place | Western Connecticut | 770 | 721 | 729 | 705 | → |
| Inglenook | Census-Designated Place | Western Connecticut | 591 | 512 | 291 | 799 | → |
| Jewett City | Borough | Southeastern Connecticut | 3,381 | 3,063 | 3,486 | 3,393 | → |
| Kellogg Point | Census-Designated Place | Western Connecticut | ... | ... | 5 | 20 | → |
| Kensington | Census-Designated Place | Capitol | 9,850 | 10,058 | 9,970 | 9,962 | → |
| Knollcrest | Census-Designated Place | Western Connecticut | 363 | 341 | 328 | 334 | → |
| Lake Bungee | Census-Designated Place | Northeastern Connecticut | 437 | 704 | 614 | 601 | → |
| Lake Chaffee | Census-Designated Place | Northeastern Connecticut | 354 | 372 | 325 | 282 | → |
| Lake Pocotopaug | Census-Designated Place | Lower Connecticut River Valley | 3,765 | 3,959 | 4,880 | 4,901 | → |
| Lakes East | Census-Designated Place | Western Connecticut | 927 | 999 | 994 | 1,299 | → |
| Lakes West | Census-Designated Place | Western Connecticut | 998 | 957 | 985 | 1,186 | → |
| Lakeside Woods | Census-Designated Place | Western Connecticut | 201 | 153 | 223 | 309 | → |
| Lakeville | Census-Designated Place | Northwest Hills | 1,132 | 1,153 | 1,052 | 1,059 | → |
| Litchfield | Borough | Northwest Hills | 1,379 | 1,345 | 1,257 | 1,194 | → |
| Long Hill | Census-Designated Place | Greater Bridgeport | 7,040 | 7,696 | 7,743 | 8,039 | → |
| Long Hill | Census-Designated Place | Southeastern Connecticut | 3,175 | 3,534 | 4,205 | 3,948 | → |
| Lordship | Census-Designated Place | Greater Bridgeport | 2,995 | 2,937 | 2,700 | 2,954 | → |
| Madison Center | Census-Designated Place | South Central Connecticut | 2,139 | 2,222 | 2,290 | 2,250 | → |
| Mamanasco Lake | Census-Designated Place | Western Connecticut | 417 | 457 | 470 | 509 | → |
| Manchester | Census-Designated Place | Capitol | 36,272 | 35,667 | 36,116 | 36,379 | → |
| Mansfield Center | Census-Designated Place | Capitol | 989 | 1,080 | 1,035 | 1,021 | → |
| Mashantucket | Census-Designated Place | Southeastern Connecticut | 132 | 335 | 299 | 457 | → |
| Mechanicsville | Census-Designated Place | Northeastern Connecticut | 507 | 405 | 506 | 540 | → |
| Meriden | City | South Central Connecticut | 59,451 | 58,231 | 60,825 | 60,830 | → |
| Middletown | City | Lower Connecticut River Valley | 42,776 | 44,360 | 47,650 | 47,723 | → |
| Milford | City | South Central Connecticut | 48,149 | 50,631 | 51,291 | 50,569 | → |
| Mill Plain | Census-Designated Place | Greater Bridgeport | 1,550 | 1,600 | 1,660 | 1,654 | → |
| Moodus | Census-Designated Place | Lower Connecticut River Valley | 1,575 | 1,727 | 1,956 | 1,982 | → |
| Moosup | Census-Designated Place | Northeastern Connecticut | 3,289 | 3,237 | 3,231 | 3,113 | → |
| Murray | Census-Designated Place | Greater Bridgeport | 673 | 916 | 872 | 848 | → |
| Mystic | Census-Designated Place | Southeastern Connecticut | 4,027 | 4,001 | 4,205 | 4,348 | → |
| Naugatuck | Borough | Naugatuck Valley | 30,556 | 30,978 | 31,871 | 31,580 | → |
| New Britain | City | Capitol | 75,484 | 71,513 | 73,203 | 74,155 | → |
| New Canaan | Census-Designated Place | Western Connecticut | 5,314 | 5,193 | 5,835 | 6,220 | → |
| New Hartford Center | Census-Designated Place | Northwest Hills | 1,314 | 1,049 | 1,385 | 1,284 | → |
| New Haven | City | South Central Connecticut | 130,159 | 123,928 | 129,864 | 134,026 | → |
| New London | City | Southeastern Connecticut | 28,556 | 26,159 | 27,620 | 27,374 | → |
| New Milford | Census-Designated Place | Western Connecticut | 6,357 | 6,633 | 6,878 | 7,160 | → |
| New Preston | Census-Designated Place | Northwest Hills | 1,217 | 1,110 | 1,182 | 1,126 | → |
| Newington | Census-Designated Place | Capitol | 29,208 | 29,306 | 30,562 | 30,536 | → |
| Newtown | Borough | Western Connecticut | 1,760 | 1,877 | 1,929 | 1,912 | → |
| Niantic | Census-Designated Place | Southeastern Connecticut | 3,048 | 3,085 | 3,114 | 3,194 | → |
| Noank | Census-Designated Place | Southeastern Connecticut | 1,784 | 1,830 | 1,796 | 1,654 | → |
| Norfolk | Census-Designated Place | Northwest Hills | 454 | 412 | 553 | 551 | → |
| Noroton | Census-Designated Place | Western Connecticut | 4,423 | 4,467 | 5,126 | 5,317 | → |
| Noroton Heights | Census-Designated Place | Western Connecticut | 2,452 | 2,829 | 2,980 | 3,116 | → |
| North Granby | Census-Designated Place | Capitol | 1,455 | 1,720 | 1,944 | 1,835 | → |
| North Grosvenor Dale | Census-Designated Place | Northeastern Connecticut | 1,705 | 1,424 | 1,530 | 1,464 | → |
| North Haven | Census-Designated Place | South Central Connecticut | 22,249 | 23,035 | 24,093 | 24,253 | → |
| Northford | Census-Designated Place | South Central Connecticut | 5,828 | 5,895 | 6,183 | 6,082 | → |
| Northwest Harwinton | Census-Designated Place | Northwest Hills | 3,299 | 3,242 | 3,252 | 3,158 | → |
| Norwalk | City | Western Connecticut | 78,412 | 82,990 | 85,609 | 91,188 | → |
| Norwich | City | Southeastern Connecticut | 37,470 | 36,139 | 40,503 | 40,129 | → |
| Oakville | Census-Designated Place | Naugatuck Valley | 9,399 | 9,520 | 9,748 | 9,504 | → |
| Old Greenwich | Census-Designated Place | Western Connecticut | 5,843 | 6,452 | 6,611 | 6,962 | → |
| Old Hill | Census-Designated Place | Western Connecticut | 2,486 | 2,518 | 2,582 | 2,676 | → |
| Old Mystic | Census-Designated Place | Southeastern Connecticut | 2,849 | 3,205 | 3,554 | 3,493 | → |
| Old Saybrook Center | Census-Designated Place | Lower Connecticut River Valley | 1,820 | 1,962 | 2,039 | 2,278 | → |
| Orange | Census-Designated Place | South Central Connecticut | 12,830 | 13,233 | 13,956 | 14,280 | → |
| Oronoque | Census-Designated Place | Greater Bridgeport | 3,601 | 3,658 | 3,536 | 3,790 | → |
| Oxoboxo River | Census-Designated Place | Southeastern Connecticut | 2,950 | 2,938 | 3,165 | 2,955 | → |
| Pawcatuck | Census-Designated Place | Southeastern Connecticut | 5,289 | 5,474 | 5,624 | 5,433 | → |
| Pemberwick | Census-Designated Place | Western Connecticut | 2,904 | 3,532 | 3,680 | 3,899 | → |
| Plainfield Village | Census-Designated Place | Northeastern Connecticut | 2,856 | 2,638 | 2,557 | 2,580 | → |
| Plantsville | Census-Designated Place | Capitol | 1,756 | 2,068 | 2,049 | 2,016 | → |
| Plattsville | Census-Designated Place | Greater Bridgeport | 1,241 | 1,127 | 1,094 | 1,131 | → |
| Pleasant Valley | Census-Designated Place | Northwest Hills | 143 | 120 | 165 | 161 | → |
| Poplar Plains | Census-Designated Place | Western Connecticut | 1,007 | 1,122 | 1,179 | 1,322 | → |
| Poquonock Bridge | Census-Designated Place | Southeastern Connecticut | 1,858 | 1,592 | 1,727 | 1,686 | → |
| Portland | Census-Designated Place | Lower Connecticut River Valley | 6,007 | 5,534 | 5,862 | 5,813 | → |
| Putnam | Census-Designated Place | Northeastern Connecticut | 6,835 | 6,746 | 7,513 | 7,065 | → |
| Quasset Lake | Census-Designated Place | Northeastern Connecticut | 140 | 144 | 180 | 187 | → |
| Quinebaug | Census-Designated Place | Northeastern Connecticut | 1,031 | 1,122 | 1,133 | 1,114 | → |
| Quinnipiac University | Census-Designated Place | South Central Connecticut | 1,332 | 3,038 | 588 | 3,639 | → |
| Redding Center | Census-Designated Place | Western Connecticut | 76 | 203 | 220 | 315 | → |
| Ridgebury | Census-Designated Place | Western Connecticut | 1,608 | 2,119 | 2,265 | 2,223 | → |
| Ridgefield | Census-Designated Place | Western Connecticut | 6,363 | 7,212 | 7,645 | 7,596 | → |
| Riverside | Census-Designated Place | Western Connecticut | 8,074 | 8,124 | 8,416 | 8,843 | → |
| Riverton | Census-Designated Place | Northwest Hills | 78 | 66 | 60 | 160 | → |
| Rock Ridge | Census-Designated Place | Western Connecticut | 618 | 613 | 686 | 658 | → |
| Rockville | Census-Designated Place | Capitol | 8,509 | 7,708 | 7,474 | 7,920 | → |
| Route 7 Gateway | Census-Designated Place | Western Connecticut | 245 | 397 | 735 | 818 | → |
| Sacred Heart University | Census-Designated Place | Greater Bridgeport | ... | ... | 119 | 1,446 | → |
| Sail Harbor | Census-Designated Place | Western Connecticut | 182 | 98 | 43 | 175 | → |
| Salmon Brook | Census-Designated Place | Capitol | 2,261 | 2,651 | 2,324 | 2,428 | → |
| Sandy Hook | Census-Designated Place | Western Connecticut | 6,483 | 8,585 | 9,660 | 9,114 | → |
| Saugatuck | Census-Designated Place | Western Connecticut | 2,673 | 2,738 | 2,770 | 2,937 | → |
| Saybrook Manor | Census-Designated Place | Lower Connecticut River Valley | 1,073 | 1,133 | 1,052 | 1,172 | → |
| Sharon | Census-Designated Place | Northwest Hills | 787 | 844 | 729 | 662 | → |
| Shelton | City | Naugatuck Valley | 35,414 | 38,101 | 39,563 | 40,883 | → |
| Sherman | Census-Designated Place | Western Connecticut | 64 | 167 | 49 | 115 | → |
| Sherwood Manor | Census-Designated Place | Capitol | 7,044 | 6,273 | 5,768 | 5,372 | → |
| Simsbury Center | Census-Designated Place | Capitol | 5,577 | 5,603 | 5,836 | 6,268 | → |
| Somers | Census-Designated Place | Capitol | 1,857 | 1,796 | 1,959 | 1,990 | → |
| South Coventry | Census-Designated Place | Capitol | 1,176 | 1,381 | 1,483 | 1,612 | → |
| South Wilton | Census-Designated Place | Western Connecticut | 1,110 | 967 | 1,265 | 1,447 | → |
| South Windham | Census-Designated Place | Southeastern Connecticut | 1,644 | 1,278 | 1,421 | 1,383 | → |
| South Woodstock | Census-Designated Place | Northeastern Connecticut | 1,112 | 1,211 | 1,291 | 1,493 | → |
| Southport | Census-Designated Place | Greater Bridgeport | 1,449 | 1,547 | 1,585 | 1,797 | → |
| Southwood Acres | Census-Designated Place | Capitol | 9,649 | 8,791 | 8,331 | 7,879 | → |
| Stafford Springs | Census-Designated Place | Capitol | 5,199 | 4,963 | 4,988 | 4,780 | → |
| Stamford | City | Western Connecticut | 108,089 | 117,080 | 122,633 | 135,451 | → |
| Staples | Census-Designated Place | Western Connecticut | 6,052 | 6,328 | 6,737 | 6,954 | → |
| Stepney | Census-Designated Place | Greater Bridgeport | 3,779 | 4,372 | 4,525 | 4,280 | → |
| Stonington | Borough | Southeastern Connecticut | 1,165 | 1,032 | 923 | 992 | → |
| Storrs | Census-Designated Place | Capitol | 12,198 | 10,996 | 15,424 | 15,979 | → |
| Stratford Downtown | Census-Designated Place | Greater Bridgeport | 1,419 | 1,445 | 1,465 | 1,473 | → |
| Suffield Depot | Census-Designated Place | Capitol | 1,467 | 1,348 | 1,431 | 1,440 | → |
| Tariffville | Census-Designated Place | Capitol | 1,477 | 1,371 | 1,324 | 1,324 | → |
| Tashua | Census-Designated Place | Greater Bridgeport | 3,802 | 3,623 | 3,959 | 3,857 | → |
| Taylor Corners | Census-Designated Place | Western Connecticut | 1,292 | 835 | 967 | 645 | → |
| Terramuggus | Census-Designated Place | Capitol | 1,044 | 1,048 | 1,025 | 990 | → |
| Terryville | Census-Designated Place | Naugatuck Valley | 5,426 | 5,360 | 5,387 | 5,202 | → |
| Thomaston | Census-Designated Place | Naugatuck Valley | 1,391 | 1,734 | 1,910 | 1,928 | → |
| Thompsonville | Census-Designated Place | Capitol | 8,458 | 8,125 | 8,577 | 8,514 | → |
| Tokeneke | Census-Designated Place | Western Connecticut | 2,605 | 2,628 | 2,678 | 2,794 | → |
| Topstone | Census-Designated Place | Western Connecticut | 20 | 30 | 17 | 113 | → |
| Torrington | City | Northwest Hills | 33,704 | 35,209 | 36,395 | 35,508 | → |
| Trumbull Center | Census-Designated Place | Greater Bridgeport | 7,540 | 7,850 | 9,576 | 9,746 | → |
| Wallingford Center | Census-Designated Place | South Central Connecticut | 17,827 | 17,509 | 18,209 | 18,278 | → |
| Waterbury | City | Naugatuck Valley | 108,226 | 107,195 | 110,305 | 114,455 | → |
| Waterford | Census-Designated Place | Southeastern Connecticut | 2,939 | 2,935 | 2,887 | 3,074 | → |
| Watertown | Census-Designated Place | Naugatuck Valley | 3,782 | 3,402 | 3,861 | 3,938 | → |
| Wauregan | Census-Designated Place | Northeastern Connecticut | 1,487 | 1,439 | 1,641 | 1,539 | → |
| Weatogue | Census-Designated Place | Capitol | 2,521 | 2,805 | 2,776 | 2,906 | → |
| West Cornwall | Census-Designated Place | Northwest Hills | ... | 150 | 119 | 138 | → |
| West Hartford | Census-Designated Place | Capitol | 60,110 | 63,589 | 63,268 | 64,083 | → |
| West Haven | City | South Central Connecticut | 54,283 | 52,383 | 55,564 | 55,580 | → |
| West Mountain | Census-Designated Place | Western Connecticut | 604 | 739 | 640 | 603 | → |
| West Simsbury | Census-Designated Place | Capitol | 2,291 | 2,541 | 2,620 | 2,521 | → |
| Westbrook Center | Census-Designated Place | Lower Connecticut River Valley | 2,060 | 2,238 | 2,413 | 2,220 | → |
| Weston | Census-Designated Place | Western Connecticut | 858 | 960 | 971 | 980 | → |
| Westport Village | Census-Designated Place | Western Connecticut | 2,730 | 3,200 | 3,196 | 3,251 | → |
| Wethersfield | Census-Designated Place | Capitol | 25,651 | 26,271 | 26,668 | 27,298 | → |
| Willimantic | Census-Designated Place | Southeastern Connecticut | 16,167 | 17,430 | 18,995 | 18,149 | → |
| Wilton Center | Census-Designated Place | Western Connecticut | 489 | 835 | 1,287 | 1,466 | → |
| Windsor Locks | Census-Designated Place | Capitol | 12,358 | 12,043 | 12,498 | 12,613 | → |
| Winsted | Census-Designated Place | Northwest Hills | 8,254 | 7,321 | 7,712 | 7,192 | → |
| Witches Woods | Census-Designated Place | Northeastern Connecticut | 159 | 81 | 142 | 114 | → |
| Woodbury Center | Census-Designated Place | Naugatuck Valley | 1,212 | 1,298 | 1,294 | 1,335 | → |
| Woodmont | Borough | South Central Connecticut | 1,772 | 1,658 | 1,465 | 1,471 | → |
Source: U.S. Census Bureau.
Explanation: Latest available rebased population figures are used. In case of significant changes, they were recalculated by using census block data.