RANKING · 2020 CENSUS · 65 SHOWN OF 65

Largest Irish population, Connecticut cities · 2020

Connecticut cities ranked by the number of residents who are Irish ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 65 cities in Connecticut that qualify, ranked against each other statewide.

Irish Americans: full group profile →

ConnecticutAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH POPULATIONVS 2010

01Stamford, CTCT139,53513,286+10%

02Milford, CTCT51,21511,527−14%

03West Hartford, CTCT63,62011,293−3%

04Danbury, CTCT89,0339,418−14%

05Norwalk, CTCT94,5089,414−19%

06Bristol, CTCT62,3419,112−16%

07New Haven, CTCT138,7748,415−6%

08Waterbury, CTCT115,7717,748−41%

09Meriden, CTCT60,8107,632−15%

10Shelton, CTCT42,8807,403+7%

11West Haven, CTCT55,3516,964−27%

12Middletown, CTCT48,4396,369−11%

13Manchester, CTCT36,7595,701+3%

14Norwich, CTCT40,0015,179−15%

15Naugatuck, CTCT32,2305,102−19%

16New Britain, CTCT76,2865,049−20%

17Torrington, CTCT35,7965,021−18%

18North Haven, CTCT24,3364,839+6%

19Bridgeport, CTCT152,2734,413−40%

20East Haven, CTCT27,8064,386−20%

21Newington, CTCT30,8964,225−18%

22Wethersfield, CTCT27,2504,224−29%

23Hartford, CTCT121,9813,810−14%

24Wallingford Center, CTCT18,2083,674−13%

25New London, CTCT28,0033,616+9%

26East Hartford, CTCT50,9183,383−37%

27Windsor Locks, CTCT12,5793,225+7%

28Orange, CTCT14,3152,795−0%

29Sandy Hook, CTCT9,8632,479–

30Ansonia, CTCT19,2162,425−11%

31Willimantic, CTCT18,0962,195−9%

32Derby, CTCT12,9252,080+11%

33Greenwich, CTCT14,7922,035−3%

34Southwood Acres, CTCT8,1151,872−12%

35Simsbury Center, CTCT6,1981,794−3%

36New Milford, CTCT8,1881,776+24%

37Oakville, CTCT9,2761,758+4%

38Bethel, CTCT11,4041,751−15%

39New Canaan, CTCT6,8961,643–

40Thompsonville, CTCT7,9271,618−33%

41Trumbull Center, CTCT10,2641,566–

42Glastonbury Center, CTCT7,2661,513−8%

43Northford, CTCT6,1861,506–

44Ridgefield, CTCT6,9701,454−37%

45Kensington, CTCT9,9621,443−30%

46Conning Towers-Nautilus Park, CTCT8,4601,441−6%

47Cheshire, CTCT6,1721,381+25%

48Groton, CTCT10,1601,361−21%

49Daniels Farm, CTCT5,9761,342–

50Portland, CTCT5,9441,319+4%

51Long Hill CDP (Greater Bridgeport County), CTCT8,6811,270–

52Noroton, CTCT5,5391,227–

53Pawcatuck, CTCT5,5771,219+1%

54Cos Cob, CTCT7,5461,208+5%

55Riverside, CTCT8,9541,160−32%

56Branford Center, CTCT6,3051,157−18%

57Rockville, CTCT7,0721,085+10%

58Putnam, CTCT7,1201,084−28%

59Sherwood Manor, CTCT5,7061,060−19%

60Old Greenwich, CTCT6,936999−11%

61Winsted, CTCT6,977989−36%

62Hazardville, CTCT6,022936−15%

63Storrs, CTCT15,207843−67%

64Staples, CTCT7,340813–

65Terryville, CTCT5,461755−43%

SHOWING 1–65 OF 65

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS