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

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Glastonbury Center, CTCT7,266-14.1%−15.2 pts

02Hazardville, CTCT6,022-12.3%−7.0 pts

03Rockville, CTCT7,072-10.7%–

04Ridgefield, CTCT6,970-8.2%−21.6 pts

05Thompsonville, CTCT7,927-6.9%−3.0 pts

06Cheshire, CTCT6,172-5.0%−5.6 pts

07Storrs, CTCT15,207-4.8%+5.0 pts

08Conning Towers-Nautilus Park, CTCT8,460-4.6%−6.9 pts

09Winsted, CTCT6,977-3.0%+8.3 pts

10Daniels Farm, CTCT5,976-2.8%–

11Oakville, CTCT9,276-2.4%−1.0 pts

12Bethel, CTCT11,404-1.5%−5.0 pts

13Simsbury Center, CTCT6,198-1.1%−1.0 pts

14West Hartford, CTCT63,620-0.7%−6.5 pts

15Meriden, CTCT60,810-0.5%+1.6 pts

16West Haven, CTCT55,351-0.4%+2.7 pts

17East Haven, CTCT27,806-0.4%−8.2 pts

18Wallingford Center, CTCT18,208-0.4%+1.4 pts

19Norwich, CTCT40,001-0.4%+3.0 pts

20Old Greenwich, CTCT6,936-0.4%–

21Willimantic, CTCT18,096-0.3%–

22Windsor Locks, CTCT12,579-0.3%+2.3 pts

23East Hartford, CTCT50,918-0.2%+1.5 pts

24Wethersfield, CTCT27,250-0.2%−2.6 pts

25Kensington, CTCT9,9620.0%−2.8 pts

26Hartford, CTCT121,981+0.1%+13.1 pts

27Torrington, CTCT35,796+0.1%−4.4 pts

28New Britain, CTCT76,286+0.1%+5.4 pts

29New Haven, CTCT138,774+0.2%+5.5 pts

30Orange, CTCT14,315+0.2%−2.9 pts

31Bridgeport, CTCT152,273+0.3%+1.9 pts

32North Haven, CTCT24,336+0.3%−3.2 pts

33Waterbury, CTCT115,771+0.4%+2.0 pts

34Middletown, CTCT48,439+0.5%−0.4 pts

35Ansonia, CTCT19,216+0.6%−0.2 pts

36Putnam, CTCT7,120+0.8%–

37Danbury, CTCT89,033+0.9%−13.3 pts

38Naugatuck, CTCT32,230+0.9%−0.3 pts

39Milford, CTCT51,215+0.9%–

40New London, CTCT28,003+0.9%+11.0 pts

41Bristol, CTCT62,341+1.0%+2.0 pts

42Manchester, CTCT36,759+1.0%–

43Groton, CTCT10,160+1.1%−0.7 pts

44Norwalk, CTCT94,508+1.1%−4.8 pts

45Newington, CTCT30,896+1.2%+0.8 pts

46Stamford, CTCT139,535+1.2%−7.1 pts

47Riverside, CTCT8,954+1.3%–

48Derby, CTCT12,925+1.3%−0.3 pts

49Northford, CTCT6,186+1.7%–

50Portland, CTCT5,944+2.3%+4.2 pts

51Shelton, CTCT42,880+2.5%−5.1 pts

52Pawcatuck, CTCT5,577+2.7%−0.8 pts

53Southwood Acres, CTCT8,115+3.0%+13.0 pts

54Noroton, CTCT5,539+4.2%–

55Branford Center, CTCT6,305+4.6%+3.8 pts

56Terryville, CTCT5,461+5.0%+6.2 pts

57Trumbull Center, CTCT10,264+5.3%–

58Staples, CTCT7,340+5.6%–

59Sherwood Manor, CTCT5,706+6.2%+16.7 pts

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%−0.5 pts

SHOWING 1–65 OF 65

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES