RANKING · 2010 CENSUS · 88 SHOWN OF 88

Highest Irish population share, Ohio counties · 2010

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, OHOH232,21718.9%–

02Medina County, OHOH185,02518.3%–

03Clermont County, OHOH216,97718.1%–

04Belmont County, OHOH64,43417.9%–

05Columbiana County, OHOH99,37717.7%–

06Jefferson County, OHOH63,59717.1%–

07Geauga County, OHOH95,67617.1%–

08Portage County, OHOH163,40417.1%–

09Lorain County, OHOH323,21916.7%–

10Washington County, OHOH58,38916.7%–

11Mahoning County, OHOH224,70616.6%–

12Madison County, OHOH46,98516.5%–

13Delaware County, OHOH242,03216.3%–

14Fairfield County, OHOH169,75216.2%–

15Licking County, OHOH185,56416.0%–

16Tuscarawas County, OHOH92,37316.0%–

17Ashtabula County, OHOH96,71315.8%–

18Gallia County, OHOH29,07215.6%–

19Stark County, OHOH373,77115.5%–

20Harrison County, OHOH14,07015.5%–

21Muskingum County, OHOH87,01415.5%–

22Clinton County, OHOH42,30115.4%–

23Summit County, OHOH538,37615.3%–

24Adams County, OHOH27,86515.3%–

25Union County, OHOH73,44615.3%–

26Erie County, OHOH73,29615.2%–

27Guernsey County, OHOH38,37915.2%–

28Marion County, OHOH65,11515.2%–

29Ross County, OHOH76,42915.2%–

30Hardin County, OHOH30,07215.1%–

31Scioto County, OHOH71,36515.0%–

32Clark County, OHOH135,34015.0%–

33Pickaway County, OHOH62,97814.9%–

34Highland County, OHOH43,82314.9%–

35Champaign County, OHOH38,82014.9%–

36Perry County, OHOH35,91814.9%–

37Pike County, OHOH27,06114.8%–

38Hamilton County, OHOH838,41814.7%–

39Preble County, OHOH40,66414.6%–

40Huron County, OHOH58,25014.5%–

41Monroe County, OHOH12,99414.5%–

42Franklin County, OHOH1,361,53614.4%–

43Carroll County, OHOH26,47514.4%–

44Morrow County, OHOH36,30514.4%–

45Knox County, OHOH64,00214.4%–

46Wood County, OHOH134,17614.4%–

47Meigs County, OHOH21,58714.3%–

48Crawford County, OHOH41,89614.3%–

49Trumbull County, OHOH198,97214.3%–

50Vinton County, OHOH12,64514.2%–

51Coshocton County, OHOH37,18814.2%–

52Brown County, OHOH44,39714.2%–

53Warren County, OHOH257,18114.1%–

54Hocking County, OHOH27,51214.1%–

55Athens County, OHOH63,19714.0%–

56Butler County, OHOH400,12813.6%–

57Miami County, OHOH112,63413.5%–

58Logan County, OHOH46,30213.5%–

59Richland County, OHOH124,89313.3%–

60Lucas County, OHOH423,34713.2%–

61Noble County, OHOH14,27613.1%–

62Cuyahoga County, OHOH1,232,92513.0%–

63Greene County, OHOH174,32213.0%–

64Lawrence County, OHOH55,71012.9%–

65Wayne County, OHOH116,75812.9%–

66Montgomery County, OHOH539,59812.8%–

67Morgan County, OHOH13,62612.7%–

68Auglaize County, OHOH45,90912.6%–

69Allen County, OHOH100,88112.6%–

70Defiance County, OHOH38,29212.5%–

71Van Wert County, OHOH29,01312.4%–

72Sandusky County, OHOH58,65512.1%–

73Williams County, OHOH36,54912.0%–

74Ottawa County, OHOH39,48111.9%–

75Fulton County, OHOH41,85311.9%–

76Jackson County, OHOH32,81711.6%–

77Wyandot County, OHOH21,56711.2%–

78Ashland County, OHOH52,52311.2%–

79Hancock County, OHOH75,03411.0%–

80Shelby County, OHOH48,06511.0%–

81Darke County, OHOH51,52010.6%–

82Henry County, OHOH27,59810.6%–

83Fayette County, OHOH28,55210.6%–

84Paulding County, OHOH18,72710.5%–

85Seneca County, OHOH54,52210.4%–

86Mercer County, OHOH42,7378.3%–

87Putnam County, OHOH34,3807.8%–

88Holmes County, OHOH44,9706.6%–

SHOWING 1–88 OF 88

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