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. The median across all 65 is +0.4%. Biggest climber in the top 100 since 2020: Hazardville, CT, up 55 places to #2.

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SAME RANKING BYCounties States Metros

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01▲52Glastonbury Center, CTCT7,266-14.1%−15.2 pts

02▲55Hazardville, CTCT6,022-12.3%−7.0 pts

03▲42Rockville, CTCT7,072-10.7%–

04▲14Ridgefield, CTCT6,970-8.2%−21.6 pts

05▲11Thompsonville, CTCT7,927-6.9%−3.0 pts

06▲46Cheshire, CTCT6,172-5.0%−5.6 pts

07▲34Storrs, CTCT15,207-4.8%+5.0 pts

08▲17Conning Towers-Nautilus Park, CTCT8,460-4.6%−6.9 pts

09▼7Winsted, CTCT6,977-3.0%+8.3 pts

10Daniels Farm, CTCT5,976-2.8%–

11▲31Oakville, CTCT9,276-2.4%−1.0 pts

12▲44Bethel, CTCT11,404-1.5%−5.0 pts

13▲36Simsbury Center, CTCT6,198-1.1%−1.0 pts

14▲16West Hartford, CTCT63,620-0.7%−6.5 pts

15▲6Meriden, CTCT60,810-0.5%+1.6 pts

16▲6West Haven, CTCT55,351-0.4%+2.7 pts

17▼14East Haven, CTCT27,806-0.4%−8.2 pts

18▲6Wallingford Center, CTCT18,208-0.4%+1.4 pts

19▼5Norwich, CTCT40,001-0.4%+3.0 pts

20▲24Old Greenwich, CTCT6,936-0.4%–

21▲12Willimantic, CTCT18,096-0.3%–

22▲6Windsor Locks, CTCT12,579-0.3%+2.3 pts

23▼4East Hartford, CTCT50,918-0.2%+1.5 pts

24▲10Wethersfield, CTCT27,250-0.2%−2.6 pts

25▲29Kensington, CTCT9,9620.0%−2.8 pts

26▼19Hartford, CTCT121,981+0.1%+13.1 pts

27▼19Torrington, CTCT35,796+0.1%−4.4 pts

28▲1New Britain, CTCT76,286+0.1%+5.4 pts

29▲8New Haven, CTCT138,774+0.2%+5.5 pts

30▲2Orange, CTCT14,315+0.2%−2.9 pts

31▲5Bridgeport, CTCT152,273+0.3%+1.9 pts

32▼5North Haven, CTCT24,336+0.3%−3.2 pts

33▲7Waterbury, CTCT115,771+0.4%+2.0 pts

34▼11Middletown, CTCT48,439+0.5%−0.4 pts

35▼25Ansonia, CTCT19,216+0.6%−0.2 pts

36▼27Putnam, CTCT7,120+0.8%–

37▲11Danbury, CTCT89,033+0.9%−13.3 pts

38▼26Naugatuck, CTCT32,230+0.9%−0.3 pts

39▼28Milford, CTCT51,215+0.9%–

40▼27New London, CTCT28,003+0.9%+11.0 pts

41▼15Bristol, CTCT62,341+1.0%+2.0 pts

42▲13Manchester, CTCT36,759+1.0%–

43▼42Groton, CTCT10,160+1.1%−0.7 pts

44▲2Norwalk, CTCT94,508+1.1%−4.8 pts

45▼25Newington, CTCT30,896+1.2%+0.8 pts

46▲5Stamford, CTCT139,535+1.2%−7.1 pts

47▼4Riverside, CTCT8,954+1.3%–

48▼44Derby, CTCT12,925+1.3%−0.3 pts

49Northford, CTCT6,186+1.7%–

50▼35Portland, CTCT5,944+2.3%+4.2 pts

51▼13Shelton, CTCT42,880+2.5%−5.1 pts

52▼46Pawcatuck, CTCT5,577+2.7%−0.8 pts

53▼18Southwood Acres, CTCT8,115+3.0%+13.0 pts

54Noroton, CTCT5,539+4.2%–

55▼16Branford Center, CTCT6,305+4.6%+3.8 pts

56▼51Terryville, CTCT5,461+5.0%+6.2 pts

57Trumbull Center, CTCT10,264+5.3%–

58Staples, CTCT7,340+5.6%–

59▼42Sherwood Manor, CTCT5,706+6.2%+16.7 pts

60▼13Greenwich, CTCT14,792+6.9%–

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

62Sandy Hook, CTCT9,863+8.2%–

63▼32Cos Cob, CTCT7,546+9.8%–

64New Canaan, CTCT6,896+10.9%–

65▼15New Milford, CTCT8,188+14.4%−0.5 pts

SHOWING 1–65 OF 65

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES