RANKING · 2010 CENSUS · 51 SHOWN OF 51

Most population lost, Connecticut cities · 2010

Connecticut cities that lost the most residents from the 2000 census to 2010, by raw count of people rather than percentage. This list covers the 51 cities in Connecticut that qualify, ranked against each other statewide. The median across all 51 is +677.

Flip the list · Most population gained, US cities →

ConnecticutAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most population gained Most densely populated Most sparsely populated

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Conning Towers-Nautilus Park, CTCT8,460-1,407−717%

02Southwood Acres, CTCT8,115-410−54%

03West Hartford, CTCT63,620-321−109%

04Hazardville, CTCT6,022-301+8%

05Sherwood Manor, CTCT5,706-279−58%

06Rockville, CTCT7,072-234–

07New Milford, CTCT8,188-110−113%

08Kensington, CTCT9,962-82−135%

09Cheshire, CTCT6,172-3−110%

10Terryville, CTCT5,461+27−141%

11Branford Center, CTCT6,305+84+79%

12Pawcatuck, CTCT5,577+150−19%

13Glastonbury Center, CTCT7,266+230+207%

14Simsbury Center, CTCT6,198+233−5925%

15Portland, CTCT5,944+328−395%

16Groton, CTCT10,160+379+119%

17Winsted, CTCT6,977+391−142%

18Wethersfield, CTCT27,250+397−36%

19Bethel, CTCT11,404+412+36%

20Bristol, CTCT62,341+415−172%

21Oakville, CTCT9,276+429−449%

22Ridgefield, CTCT6,970+433−49%

23Thompsonville, CTCT7,927+452−236%

24Windsor Locks, CTCT12,579+455−244%

25Derby, CTCT12,925+511+166%

26Milford, CTCT51,215+677–

27Ansonia, CTCT19,216+695+360%

28Wallingford Center, CTCT18,208+700−320%

29Orange, CTCT14,315+723+79%

30Naugatuck, CTCT32,230+873+140%

31North Haven, CTCT24,336+1,058+35%

32East Haven, CTCT27,806+1,068−48%

33Torrington, CTCT35,796+1,181−22%

34Newington, CTCT30,896+1,256+1182%

35Shelton, CTCT42,880+1,458−46%

36New Britain, CTCT76,286+1,668−142%

37East Hartford, CTCT50,918+1,677−291%

38Willimantic, CTCT18,096+1,914–

39New London, CTCT28,003+1,949−168%

40Meriden, CTCT60,810+2,624−312%

41Norwalk, CTCT94,508+2,652−43%

42Waterbury, CTCT115,771+3,095−283%

43Hartford, CTCT121,981+3,197−118%

44West Haven, CTCT55,351+3,204−293%

45Storrs, CTCT15,207+4,348−462%

46Norwich, CTCT40,001+4,376−443%

47Middletown, CTCT48,439+4,481+1006%

48Bridgeport, CTCT152,273+4,700−318%

49Stamford, CTCT139,535+5,560−38%

50Danbury, CTCT89,033+6,045−35%

51New Haven, CTCT138,774+6,153−190%

SHOWING 1–51 OF 51

Download CSV (full list, 51 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS