RANKING · 2024 ACS · 65 SHOWN OF 65

Most population lost, Connecticut cities

Connecticut cities that lost the most residents from the 2020 census to 2024, by raw count of people rather than percentage. This list covers the 65 cities in Connecticut that qualify, ranked against each other statewide.

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ConnecticutAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Glastonbury Center, CTCT7,266-1,193−1691%

02Hazardville, CTCT6,022-848+204%

03Rockville, CTCT7,072-848–

04Storrs, CTCT15,207-772−36%

05Ridgefield, CTCT6,970-626−174%

06Thompsonville, CTCT7,927-587+76%

07West Hartford, CTCT63,620-463−113%

08Conning Towers-Nautilus Park, CTCT8,460-410−280%

09Cheshire, CTCT6,172-327−1190%

10Meriden, CTCT60,810-305−75%

11West Haven, CTCT55,351-233−86%

12Oakville, CTCT9,276-228+85%

13Winsted, CTCT6,977-215−77%

14Bethel, CTCT11,404-178−159%

15Daniels Farm, CTCT5,976-174–

16Norwich, CTCT40,001-152−88%

17East Hartford, CTCT50,918-127−86%

18East Haven, CTCT27,806-117−106%

19Simsbury Center, CTCT6,198-70+1650%

20Wallingford Center, CTCT18,208-70−78%

21Willimantic, CTCT18,096-53–

22Wethersfield, CTCT27,250-48−108%

23Windsor Locks, CTCT12,579-34−89%

24Old Greenwich, CTCT6,936-26–

25Kensington, CTCT9,9620−100%

26Torrington, CTCT35,796+32−98%

27Orange, CTCT14,315+35−91%

28Putnam, CTCT7,120+55–

29Hartford, CTCT121,981+73−100%

30North Haven, CTCT24,336+83−89%

31New Britain, CTCT76,286+88−102%

32Groton, CTCT10,160+103−40%

33Northford, CTCT6,186+104–

34Riverside, CTCT8,954+111–

35Ansonia, CTCT19,216+115−24%

36Portland, CTCT5,944+131−218%

37Pawcatuck, CTCT5,577+144−22%

38Derby, CTCT12,925+162−16%

39Noroton, CTCT5,539+222–

40Southwood Acres, CTCT8,115+236−126%

41Middletown, CTCT48,439+241−40%

42New London, CTCT28,003+258−109%

43Terryville, CTCT5,461+259−492%

44Branford Center, CTCT6,305+279+494%

45Naugatuck, CTCT32,230+281−23%

46New Haven, CTCT138,774+326−105%

47Sherwood Manor, CTCT5,706+334−150%

48Newington, CTCT30,896+360+267%

49Manchester, CTCT36,759+380–

50Staples, CTCT7,340+386–

51Milford, CTCT51,215+465–

52Waterbury, CTCT115,771+466−128%

53Bridgeport, CTCT152,273+499−123%

54Trumbull Center, CTCT10,264+518–

55Bristol, CTCT62,341+629−209%

56Long Hill CDP (Greater Bridgeport County), CTCT8,681+642–

57Cos Cob, CTCT7,546+673–

58New Canaan, CTCT6,896+676–

59Danbury, CTCT89,033+745−92%

60Sandy Hook, CTCT9,863+749–

61Greenwich, CTCT14,792+956–

62Norwalk, CTCT94,508+1,003−78%

63Shelton, CTCT42,880+1,020−62%

64New Milford, CTCT8,188+1,028+20%

65Stamford, CTCT139,535+1,674−81%

SHOWING 1–65 OF 65

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