RANKING · 2024 ACS · 65 SHOWN OF 65

Most population gained, Connecticut cities

Connecticut cities that added 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. The median across all 65 is +104. Biggest climber in the top 100 since 2020: Milford, CT, up 38 places to #15.

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ConnecticutAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Stamford, CTCT139,535+1,674−81%

02▲15New Milford, CTCT8,188+1,028+20%

03▲8Shelton, CTCT42,880+1,020−62%

04Norwalk, CTCT94,508+1,003−78%

05▲9Greenwich, CTCT14,792+956–

06Sandy Hook, CTCT9,863+749–

07▼4Danbury, CTCT89,033+745−92%

08New Canaan, CTCT6,896+676–

09▲23Cos Cob, CTCT7,546+673–

10Long Hill CDP (Greater Bridgeport County), CTCT8,681+642–

11▲14Bristol, CTCT62,341+629−209%

12Trumbull Center, CTCT10,264+518–

13▼8Bridgeport, CTCT152,273+499−123%

14▼7Waterbury, CTCT115,771+466−128%

15▲38Milford, CTCT51,215+465–

16Staples, CTCT7,340+386–

17▼15Manchester, CTCT36,759+380–

18▲20Newington, CTCT30,896+360+267%

19▲20Sherwood Manor, CTCT5,706+334−150%

20▼14New Haven, CTCT138,774+326−105%

21▲28Naugatuck, CTCT32,230+281−23%

22▲7Branford Center, CTCT6,305+279+494%

23▲21Terryville, CTCT5,461+259−492%

24▲23New London, CTCT28,003+258−109%

25▲9Middletown, CTCT48,439+241−40%

26▲2Southwood Acres, CTCT8,115+236−126%

27Noroton, CTCT5,539+222–

28▲24Derby, CTCT12,925+162−16%

29▲16Pawcatuck, CTCT5,577+144−22%

30▲11Portland, CTCT5,944+131−218%

31▲17Ansonia, CTCT19,216+115−24%

32▼9Riverside, CTCT8,954+111–

33Northford, CTCT6,186+104–

34▲21Groton, CTCT10,160+103−40%

35▼22New Britain, CTCT76,286+88−102%

36▼6North Haven, CTCT24,336+83−89%

37▲20Hartford, CTCT121,981+73−100%

38▲5Putnam, CTCT7,120+55–

39▼12Orange, CTCT14,315+35−91%

40▲14Torrington, CTCT35,796+32−98%

41▼31Kensington, CTCT9,9620−100%

42▼16Old Greenwich, CTCT6,936-26–

43▼12Windsor Locks, CTCT12,579-34−89%

44▼25Wethersfield, CTCT27,250-48−108%

45▼21Willimantic, CTCT18,096-53–

46▼13Wallingford Center, CTCT18,208-70−78%

47▼25Simsbury Center, CTCT6,198-70+1650%

48▲8East Haven, CTCT27,806-117−106%

49▼3East Hartford, CTCT50,918-127−86%

50Norwich, CTCT40,001-152−88%

51Daniels Farm, CTCT5,976-174–

52▼43Bethel, CTCT11,404-178−159%

53▼2Winsted, CTCT6,977-215−77%

54▼34Oakville, CTCT9,276-228+85%

55▼19West Haven, CTCT55,351-233−86%

56▼19Meriden, CTCT60,810-305−75%

57▼41Cheshire, CTCT6,172-327−1190%

58▼23Conning Towers-Nautilus Park, CTCT8,460-410−280%

59▼44West Hartford, CTCT63,620-463−113%

60▼18Thompsonville, CTCT7,927-587+76%

61▼21Ridgefield, CTCT6,970-626−174%

62▼44Storrs, CTCT15,207-772−36%

63▼55Hazardville, CTCT6,022-848+204%

64▼43Rockville, CTCT7,072-848–

65▼53Glastonbury Center, CTCT7,266-1,193−1691%

SHOWING 1–65 OF 65

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