RANKING · 2010 CENSUS · 72 SHOWN OF 72

Highest Irish population share, Wisconsin counties · 2010

Wisconsin counties ranked by the share of all residents who are Irish ancestry (2010 American Community Survey). A concentration measure: Irish residents as a percentage of total population. This list covers the 72 counties in Wisconsin that qualify, ranked against each other statewide. The median across all 72 is 11.5%.

Irish Americans: full group profile →

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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 –

01Lafayette County, WIWI17,47821.2%–

02Iowa County, WIWI23,95118.8%–

03Richland County, WIWI17,03617.3%–

04Crawford County, WIWI15,91016.5%–

05Grant County, WIWI52,44616.5%–

06Columbia County, WIWI58,13215.6%–

07Rock County, WIWI166,47215.5%–

08Walworth County, WIWI106,12715.5%–

09Juneau County, WIWI26,64915.3%–

10Marquette County, WIWI15,92715.1%–

11Pierce County, WIWI43,51914.8%–

12Waukesha County, WIWI417,21014.7%–

13Dane County, WIWI590,37514.6%–

14Sauk County, WIWI66,65214.4%–

15La Crosse County, WIWI121,33913.9%–

16Langlade County, WIWI19,53413.8%–

17Forest County, WIWI9,57413.6%–

18Ozaukee County, WIWI94,34613.4%–

19St. Croix County, WIWI98,27613.4%–

20Kenosha County, WIWI168,44813.1%–

21Adams County, WIWI21,75213.0%–

22Chippewa County, WIWI67,61412.8%–

23Oneida County, WIWI38,13112.6%–

24Fond du Lac County, WIWI104,66912.4%–

25Burnett County, WIWI17,22312.4%–

26Monroe County, WIWI46,57212.4%–

27Outagamie County, WIWI195,89412.2%–

28Florence County, WIWI4,74811.9%–

29Douglas County, WIWI43,99011.8%–

30Waushara County, WIWI25,22311.8%–

31Waupaca County, WIWI51,46111.7%–

32Washington County, WIWI139,23811.7%–

33Portage County, WIWI71,94311.6%–

34Vernon County, WIWI31,44311.6%–

35Green County, WIWI37,22711.5%–

36Washburn County, WIWI17,08711.5%–

37Vilas County, WIWI23,76111.5%–

38Eau Claire County, WIWI109,03311.4%–

39Wood County, WIWI74,06011.2%–

40Sawyer County, WIWI18,84610.9%–

41Dodge County, WIWI89,09710.9%–

42Ashland County, WIWI16,20310.8%–

43Jefferson County, WIWI86,50510.6%–

44Door County, WIWI30,61610.6%–

45Winnebago County, WIWI174,21810.5%–

46Dunn County, WIWI46,22310.5%–

47Jackson County, WIWI20,99910.5%–

48Brown County, WIWI275,80310.4%–

49Barron County, WIWI46,48410.4%–

50Rusk County, WIWI14,14610.4%–

51Marinette County, WIWI42,57410.2%–

52Polk County, WIWI45,80310.2%–

53Racine County, WIWI198,9199.7%–

54Pepin County, WIWI7,5139.7%–

55Iron County, WIWI6,1279.7%–

56Lincoln County, WIWI28,4039.4%–

57Calumet County, WIWI53,9829.4%–

58Oconto County, WIWI40,1959.3%–

59Manitowoc County, WIWI81,7109.2%–

60Trempealeau County, WIWI31,1719.2%–

61Bayfield County, WIWI16,7879.2%–

62Milwaukee County, WIWI924,2169.1%–

63Sheboygan County, WIWI118,0479.0%–

64Green Lake County, WIWI19,3058.8%–

65Taylor County, WIWI20,1188.3%–

66Price County, WIWI13,9888.0%–

67Marathon County, WIWI139,4327.9%–

68Clark County, WIWI35,0527.7%–

69Shawano County, WIWI41,5607.6%–

70Buffalo County, WIWI13,3187.0%–

71Kewaunee County, WIWI20,7586.2%–

72Menominee County, WIWI4,1992.4%–

SHOWING 1–72 OF 72

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS