RANKING · 2010 CENSUS · 51 SHOWN OF 51

Fastest shrinking, Connecticut cities · 2010

Connecticut cities with the steepest population decline since the prior decennial census. This list covers the 51 cities in Connecticut that qualify, ranked against each other statewide.

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YEAR2000 2010 2020

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Conning Towers-Nautilus Park, CTCT8,460-13.7%−703%

02Hazardville, CTCT6,022-6.1%+14%

03Southwood Acres, CTCT8,115-5.1%−49%

04Sherwood Manor, CTCT5,706-4.9%−53%

05Rockville, CTCT7,072-3.0%–

06New Milford, CTCT8,188-1.7%−111%

07Kensington, CTCT9,962-1.0%−134%

08West Hartford, CTCT63,620-0.5%−109%

09Cheshire, CTCT6,172-0.1%−110%

10Terryville, CTCT5,461+0.5%−141%

11Bristol, CTCT62,341+0.7%−172%

12Milford, CTCT51,215+1.3%–

13Branford Center, CTCT6,305+1.5%+77%

14Wethersfield, CTCT27,250+1.5%−37%

15New Britain, CTCT76,286+2.3%−145%

16Hartford, CTCT121,981+2.6%−120%

17Pawcatuck, CTCT5,577+2.7%−22%

18Naugatuck, CTCT32,230+2.8%+137%

19Waterbury, CTCT115,771+2.9%−286%

20Norwalk, CTCT94,508+3.2%−46%

21Glastonbury Center, CTCT7,266+3.2%+203%

22Torrington, CTCT35,796+3.4%−25%

23Bridgeport, CTCT152,273+3.4%−321%

24East Hartford, CTCT50,918+3.4%−295%

25Ansonia, CTCT19,216+3.7%+357%

26Windsor Locks, CTCT12,579+3.8%−248%

27Groton, CTCT10,160+3.8%+115%

28East Haven, CTCT27,806+3.8%−52%

29Shelton, CTCT42,880+3.8%−49%

30Wallingford Center, CTCT18,208+4.0%−324%

31Derby, CTCT12,925+4.1%+162%

32Simsbury Center, CTCT6,198+4.2%−5929%

33Newington, CTCT30,896+4.3%+1177%

34Meriden, CTCT60,810+4.5%−317%

35Bethel, CTCT11,404+4.5%+32%

36North Haven, CTCT24,336+4.6%+30%

37Stamford, CTCT139,535+4.7%−43%

38New Haven, CTCT138,774+5.0%−195%

39Oakville, CTCT9,276+5.0%−454%

40Winsted, CTCT6,977+5.3%−147%

41Orange, CTCT14,315+5.5%+74%

42Thompsonville, CTCT7,927+5.6%−241%

43Portland, CTCT5,944+5.9%−401%

44Ridgefield, CTCT6,970+6.0%−55%

45West Haven, CTCT55,351+6.1%−299%

46New London, CTCT28,003+7.6%−176%

47Danbury, CTCT89,033+8.1%−43%

48Middletown, CTCT48,439+10.4%+996%

49Willimantic, CTCT18,096+12.1%–

50Norwich, CTCT40,001+12.1%−456%

51Storrs, CTCT15,207+39.5%−501%

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES