RANKING · 2020 CENSUS · 92 SHOWN OF 92

Largest Irish population, Indiana counties · 2020

Indiana counties 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 92 counties in Indiana that qualify, ranked against each other statewide.

Irish Americans: full group profile →

IndianaAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH POPULATIONVS 2010

01Marion County, ININ992,19680,285−24%

02Lake County, ININ504,61249,949−9%

03Hamilton County, ININ387,03640,754+7%

04Allen County, ININ402,32935,761−11%

05St. Joseph County, ININ272,86131,461−24%

06Porter County, ININ176,04925,663−15%

07Tippecanoe County, ININ190,45620,445−13%

08Vanderburgh County, ININ181,99520,248−3%

09Monroe County, ININ143,34517,277−5%

10Johnson County, ININ174,26217,176−20%

11Elkhart County, ININ208,77416,395−18%

12Hendricks County, ININ193,51015,904−25%

13Clark County, ININ130,45115,682−3%

14LaPorte County, ININ111,29414,655−14%

15Delaware County, ININ113,10612,884−23%

16Madison County, ININ135,08812,331−18%

17Vigo County, ININ106,51211,867−9%

18Floyd County, ININ82,15310,528−5%

19Hancock County, ININ90,9699,261−2%

20Kosciusko County, ININ80,8928,692−2%

21Warrick County, ININ66,8038,285−8%

22Bartholomew County, ININ85,7297,844−15%

23Wayne County, ININ66,1697,670−6%

24Morgan County, ININ74,9677,661−28%

25Howard County, ININ83,9047,624−10%

26Dearborn County, ININ51,6096,868−28%

27Boone County, ININ80,6896,432−17%

28Montgomery County, ININ38,9545,723+4%

29Lawrence County, ININ45,5685,670−16%

30Grant County, ININ66,5245,281−25%

31Henry County, ININ49,1375,035−13%

32Jasper County, ININ33,8944,560−16%

33Noble County, ININ47,9374,539−3%

34Huntington County, ININ37,2244,316−22%

35Harrison County, ININ40,4374,199−15%

36DeKalb County, ININ44,5354,060−10%

37Jackson County, ININ47,3703,985−26%

38Shelby County, ININ45,8823,845−29%

39Steuben County, ININ34,7993,778+6%

40Wabash County, ININ30,7133,771+13%

41Knox County, ININ35,6523,742−25%

42Jefferson County, ININ33,2793,583−15%

43Greene County, ININ31,1653,531−36%

44Marshall County, ININ46,5993,499−33%

45Miami County, ININ34,4873,470−22%

46Gibson County, ININ33,0913,455−21%

47Dubois County, ININ44,0163,289−3%

48Putnam County, ININ37,8763,244−33%

49Daviess County, ININ34,2093,198−21%

50Whitley County, ININ35,0463,092−25%

51Cass County, ININ37,8362,982−35%

52Ripley County, ININ29,4342,964−26%

53Decatur County, ININ26,5762,878+11%

54Owen County, ININ21,8862,779−38%

55White County, ININ25,1642,776−15%

56Jennings County, ININ27,6222,768−40%

57Starke County, ININ23,4252,748−28%

58Posey County, ININ24,9882,699−11%

59Newton County, ININ14,1882,562+6%

60Perry County, ININ19,3892,531−9%

61Washington County, ININ28,3832,530−34%

62Fayette County, ININ23,5332,517−13%

63Scott County, ININ25,0532,426−15%

64Clinton County, ININ33,3222,361−31%

65Randolph County, ININ24,4382,343−36%

66Clay County, ININ26,4102,263−34%

67Franklin County, ININ23,2862,218−27%

68LaGrange County, ININ41,3052,183−8%

69Spencer County, ININ20,0612,147−38%

70Adams County, ININ36,6502,128−24%

71Fountain County, ININ17,0132,085−16%

72Brown County, ININ15,7772,073+4%

73Sullivan County, ININ20,8312,051−8%

74Rush County, ININ16,7672,045−3%

75Wells County, ININ28,8832,041−32%

76Orange County, ININ19,8341,873−24%

77Carroll County, ININ20,6551,863−27%

78Blackford County, ININ11,7301,798−17%

79Pulaski County, ININ12,4631,757+6%

80Fulton County, ININ20,0911,637−27%

81Parke County, ININ16,6421,625−13%

82Vermillion County, ININ15,4881,621−10%

83Jay County, ININ20,1181,607−35%

84Crawford County, ININ10,5091,600−15%

85Martin County, ININ9,8561,374−31%

86Tipton County, ININ15,3191,374−11%

87Pike County, ININ12,0031,356−34%

88Benton County, ININ8,8831,160−22%

89Switzerland County, ININ10,0371,112−19%

90Warren County, ININ8,474783−16%

91Ohio County, ININ5,994738−3%

92Union County, ININ6,863574−52%

SHOWING 1–92 OF 92

Download CSV (full list, 92 rows)

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