RANKING · 2020 CENSUS · 88 SHOWN OF 88

Largest Irish population, Ohio counties · 2020

Ohio counties ranked by the number of residents who are Irish ancestry, from the 2023 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 88 counties in Ohio that qualify, ranked against each other statewide.

OhioAll states All rankings

SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH POPULATIONVS 2000

01Franklin County, OHOH1,361,536153,404–

02Cuyahoga County, OHOH1,232,925146,457–

03Hamilton County, OHOH838,418102,436–

04Summit County, OHOH538,37671,532–

05Montgomery County, OHOH539,59859,939–

06Stark County, OHOH373,77152,287–

07Lucas County, OHOH423,34750,030–

08Butler County, OHOH400,12844,621–

09Lorain County, OHOH323,21943,926–

10Lake County, OHOH232,21740,780–

11Mahoning County, OHOH224,70633,567–

12Warren County, OHOH257,18132,856–

13Delaware County, OHOH242,03231,326–

14Medina County, OHOH185,02529,764–

15Clermont County, OHOH216,97728,740–

16Portage County, OHOH163,40427,187–

17Licking County, OHOH185,56425,947–

18Greene County, OHOH174,32222,542–

19Fairfield County, OHOH169,75220,959–

20Trumbull County, OHOH198,97220,909–

21Clark County, OHOH135,34018,408–

22Wood County, OHOH134,17618,006–

23Columbiana County, OHOH99,37715,651–

24Ashtabula County, OHOH96,71312,900–

25Miami County, OHOH112,63412,710–

26Geauga County, OHOH95,67612,691–

27Allen County, OHOH100,88112,309–

28Richland County, OHOH124,89312,188–

29Wayne County, OHOH116,75812,011–

30Tuscarawas County, OHOH92,37311,115–

31Jefferson County, OHOH63,59710,992–

32Muskingum County, OHOH87,01410,689–

33Erie County, OHOH73,29610,198–

34Belmont County, OHOH64,43410,130–

35Ross County, OHOH76,4299,462–

36Athens County, OHOH63,1979,430–

37Scioto County, OHOH71,3659,091–

38Knox County, OHOH64,0028,895–

39Union County, OHOH73,4467,904–

40Hancock County, OHOH75,0347,868–

41Washington County, OHOH58,3897,619–

42Marion County, OHOH65,1157,418–

43Pickaway County, OHOH62,9787,130–

44Huron County, OHOH58,2507,118–

45Lawrence County, OHOH55,7106,843–

46Madison County, OHOH46,9856,779–

47Sandusky County, OHOH58,6556,718–

48Seneca County, OHOH54,5226,622–

49Fulton County, OHOH41,8536,291–

50Ashland County, OHOH52,5236,165–

51Champaign County, OHOH38,8205,908–

52Perry County, OHOH35,9185,763–

53Logan County, OHOH46,3025,645–

54Brown County, OHOH44,3975,428–

55Crawford County, OHOH41,8965,335–

56Guernsey County, OHOH38,3795,320–

57Clinton County, OHOH42,3015,265–

58Coshocton County, OHOH37,1885,164–

59Highland County, OHOH43,8235,127–

60Auglaize County, OHOH45,9094,967–

61Ottawa County, OHOH39,4814,910–

62Shelby County, OHOH48,0654,878–

63Darke County, OHOH51,5204,565–

64Preble County, OHOH40,6644,440–

65Williams County, OHOH36,5494,197–

66Defiance County, OHOH38,2924,021–

67Hocking County, OHOH27,5123,839–

68Morrow County, OHOH36,3053,674–

69Carroll County, OHOH26,4753,631–

70Gallia County, OHOH29,0723,613–

71Mercer County, OHOH42,7373,562–

72Hardin County, OHOH30,0723,535–

73Jackson County, OHOH32,8173,364–

74Meigs County, OHOH21,5873,295–

75Fayette County, OHOH28,5523,025–

76Pike County, OHOH27,0612,970–

77Henry County, OHOH27,5982,831–

78Wyandot County, OHOH21,5672,529–

79Adams County, OHOH27,8652,460–

80Putnam County, OHOH34,3802,371–

81Van Wert County, OHOH29,0132,329–

82Holmes County, OHOH44,9701,903–

83Harrison County, OHOH14,0701,817–

84Paulding County, OHOH18,7271,746–

85Morgan County, OHOH13,6261,724–

86Monroe County, OHOH12,9941,662–

87Noble County, OHOH14,2761,513–

88Vinton County, OHOH12,6451,449–

SHOWING 1–88 OF 88

Download CSV (full list, 88 rows)

UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES