RANKING · 2024 ACS · 65 SHOWN OF 65

Fastest shrinking, Connecticut cities

Connecticut cities with the steepest population decline from the 2020 census to 2024. This list covers the 65 cities in Connecticut that qualify, ranked against each other statewide.

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SAME RANKING BYCounties States Metros

RELATEDLargest by population Fastest growing Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Glastonbury Center, CTCT7,266-14.1%−1432%

02Hazardville, CTCT6,022-12.3%+129%

03Rockville, CTCT7,072-10.7%–

04Ridgefield, CTCT6,970-8.2%−162%

05Thompsonville, CTCT7,927-6.9%+75%

06Cheshire, CTCT6,172-5.0%−1066%

07Storrs, CTCT15,207-4.8%−51%

08Conning Towers-Nautilus Park, CTCT8,460-4.6%−303%

09Winsted, CTCT6,977-3.0%−74%

10Daniels Farm, CTCT5,976-2.8%–

11Oakville, CTCT9,276-2.4%+70%

12Bethel, CTCT11,404-1.5%−145%

13Simsbury Center, CTCT6,198-1.1%+1465%

14West Hartford, CTCT63,620-0.7%−112%

15Meriden, CTCT60,810-0.5%−76%

16West Haven, CTCT55,351-0.4%−86%

17East Haven, CTCT27,806-0.4%−105%

18Wallingford Center, CTCT18,208-0.4%−79%

19Norwich, CTCT40,001-0.4%−89%

20Old Greenwich, CTCT6,936-0.4%–

21Willimantic, CTCT18,096-0.3%–

22Windsor Locks, CTCT12,579-0.3%−89%

23East Hartford, CTCT50,918-0.2%−86%

24Wethersfield, CTCT27,250-0.2%−107%

25Kensington, CTCT9,9620.0%−100%

26Hartford, CTCT121,981+0.1%−100%

27Torrington, CTCT35,796+0.1%−98%

28New Britain, CTCT76,286+0.1%−102%

29New Haven, CTCT138,774+0.2%−105%

30Orange, CTCT14,315+0.2%−92%

31Bridgeport, CTCT152,273+0.3%−122%

32North Haven, CTCT24,336+0.3%−90%

33Waterbury, CTCT115,771+0.4%−126%

34Middletown, CTCT48,439+0.5%−47%

35Ansonia, CTCT19,216+0.6%−26%

36Putnam, CTCT7,120+0.8%–

37Danbury, CTCT89,033+0.9%−94%

38Naugatuck, CTCT32,230+0.9%−25%

39Milford, CTCT51,215+0.9%–

40New London, CTCT28,003+0.9%−109%

41Bristol, CTCT62,341+1.0%−208%

42Manchester, CTCT36,759+1.0%–

43Groton, CTCT10,160+1.1%−38%

44Norwalk, CTCT94,508+1.1%−81%

45Newington, CTCT30,896+1.2%+251%

46Stamford, CTCT139,535+1.2%−85%

47Riverside, CTCT8,954+1.3%–

48Derby, CTCT12,925+1.3%−16%

49Northford, CTCT6,186+1.7%–

50Portland, CTCT5,944+2.3%−215%

51Shelton, CTCT42,880+2.5%−67%

52Pawcatuck, CTCT5,577+2.7%−24%

53Southwood Acres, CTCT8,115+3.0%−130%

54Noroton, CTCT5,539+4.2%–

55Branford Center, CTCT6,305+4.6%+460%

56Terryville, CTCT5,461+5.0%−509%

57Trumbull Center, CTCT10,264+5.3%–

58Staples, CTCT7,340+5.6%–

59Sherwood Manor, CTCT5,706+6.2%−159%

60Greenwich, CTCT14,792+6.9%–

61Long Hill CDP (Greater Bridgeport County), CTCT8,681+8.0%–

62Sandy Hook, CTCT9,863+8.2%–

63Cos Cob, CTCT7,546+9.8%–

64New Canaan, CTCT6,896+10.9%–

65New Milford, CTCT8,188+14.4%−3%

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES