RANKING · 2020 CENSUS · 88 SHOWN OF 88

Highest Irish population share, Ohio counties · 2020

Ohio counties ranked by the share of all residents who are Irish ancestry (2023 American Community Survey). A concentration measure: Irish residents as a percentage of total population. This list covers the 88 counties in Ohio that qualify, ranked against each other statewide.

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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 SHAREVS 2000

01Lake County, OHOH232,21717.7%–

02Portage County, OHOH163,40416.7%–

03Jefferson County, OHOH63,59716.7%–

04Medina County, OHOH185,02516.6%–

05Perry County, OHOH35,91816.0%–

06Madison County, OHOH46,98515.3%–

07Columbiana County, OHOH99,37715.3%–

08Delaware County, OHOH242,03215.2%–

09Champaign County, OHOH38,82015.2%–

10Belmont County, OHOH64,43415.0%–

11Fulton County, OHOH41,85314.9%–

12Licking County, OHOH185,56414.8%–

13Mahoning County, OHOH224,70614.7%–

14Knox County, OHOH64,00214.4%–

15Meigs County, OHOH21,58714.3%–

16Athens County, OHOH63,19714.3%–

17Lorain County, OHOH323,21914.2%–

18Warren County, OHOH257,18114.1%–

19Coshocton County, OHOH37,18814.1%–

20Stark County, OHOH373,77114.1%–

21Clermont County, OHOH216,97714.0%–

22Wood County, OHOH134,17613.8%–

23Erie County, OHOH73,29613.7%–

24Clark County, OHOH135,34013.7%–

25Union County, OHOH73,44613.7%–

26Guernsey County, OHOH38,37913.6%–

27Hocking County, OHOH27,51213.6%–

28Geauga County, OHOH95,67613.6%–

29Greene County, OHOH174,32213.4%–

30Fairfield County, OHOH169,75213.4%–

31Carroll County, OHOH26,47513.4%–

32Ashtabula County, OHOH96,71313.2%–

33Summit County, OHOH538,37613.2%–

34Crawford County, OHOH41,89612.8%–

35Washington County, OHOH58,38912.7%–

36Hamilton County, OHOH838,41812.6%–

37Clinton County, OHOH42,30112.5%–

38Brown County, OHOH44,39712.5%–

39Logan County, OHOH46,30212.5%–

40Muskingum County, OHOH87,01412.4%–

41Ross County, OHOH76,42912.3%–

42Pickaway County, OHOH62,97812.3%–

43Huron County, OHOH58,25012.2%–

44Ottawa County, OHOH39,48112.1%–

45Tuscarawas County, OHOH92,37312.1%–

46Scioto County, OHOH71,36512.1%–

47Gallia County, OHOH29,07212.0%–

48Monroe County, OHOH12,99412.0%–

49Harrison County, OHOH14,07012.0%–

50Seneca County, OHOH54,52212.0%–

51Miami County, OHOH112,63412.0%–

52Allen County, OHOH100,88112.0%–

53Highland County, OHOH43,82311.9%–

54Morgan County, OHOH13,62611.8%–

55Cuyahoga County, OHOH1,232,92511.8%–

56Franklin County, OHOH1,361,53611.8%–

57Butler County, OHOH400,12811.7%–

58Lucas County, OHOH423,34711.6%–

59Wyandot County, OHOH21,56711.5%–

60Ashland County, OHOH52,52311.5%–

61Sandusky County, OHOH58,65511.4%–

62Lawrence County, OHOH55,71011.4%–

63Williams County, OHOH36,54911.4%–

64Marion County, OHOH65,11511.4%–

65Montgomery County, OHOH539,59811.3%–

66Hardin County, OHOH30,07211.3%–

67Vinton County, OHOH12,64511.1%–

68Auglaize County, OHOH45,90910.9%–

69Preble County, OHOH40,66410.8%–

70Pike County, OHOH27,06110.6%–

71Defiance County, OHOH38,29210.6%–

72Fayette County, OHOH28,55210.6%–

73Noble County, OHOH14,27610.5%–

74Trumbull County, OHOH198,97210.5%–

75Henry County, OHOH27,59810.5%–

76Morrow County, OHOH36,30510.5%–

77Hancock County, OHOH75,03410.4%–

78Jackson County, OHOH32,81710.4%–

79Wayne County, OHOH116,75810.3%–

80Richland County, OHOH124,89310.1%–

81Shelby County, OHOH48,06510.0%–

82Paulding County, OHOH18,7279.3%–

83Adams County, OHOH27,8658.9%–

84Darke County, OHOH51,5208.9%–

85Mercer County, OHOH42,7378.7%–

86Van Wert County, OHOH29,0138.3%–

87Putnam County, OHOH34,3807.0%–

88Holmes County, OHOH44,9704.3%–

SHOWING 1–88 OF 88

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