RANKING · 2020 CENSUS · 72 SHOWN OF 72

Highest Irish population share, Wisconsin counties · 2020

Wisconsin 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 72 counties in Wisconsin that qualify, ranked against each other statewide.

WisconsinAll 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 SHAREVS 2000

01Crawford County, WIWI15,91019.1%–

02Iowa County, WIWI23,95117.3%–

03Lafayette County, WIWI17,47815.5%–

04Richland County, WIWI17,03615.1%–

05Juneau County, WIWI26,64914.0%–

06Rock County, WIWI166,47214.0%–

07Florence County, WIWI4,74813.8%–

08La Crosse County, WIWI121,33913.8%–

09Pierce County, WIWI43,51913.7%–

10Walworth County, WIWI106,12713.6%–

11Marquette County, WIWI15,92713.5%–

12Waukesha County, WIWI417,21013.3%–

13Washburn County, WIWI17,08713.1%–

14Green County, WIWI37,22712.9%–

15Dane County, WIWI590,37512.7%–

16Sauk County, WIWI66,65212.6%–

17Grant County, WIWI52,44612.5%–

18Columbia County, WIWI58,13212.4%–

19Jefferson County, WIWI86,50512.2%–

20Oneida County, WIWI38,13112.1%–

21Forest County, WIWI9,57412.1%–

22Vilas County, WIWI23,76111.8%–

23St. Croix County, WIWI98,27611.8%–

24Adams County, WIWI21,75211.5%–

25Ozaukee County, WIWI94,34611.4%–

26Chippewa County, WIWI67,61411.3%–

27Vernon County, WIWI31,44311.3%–

28Kenosha County, WIWI168,44811.2%–

29Washington County, WIWI139,23811.2%–

30Fond du Lac County, WIWI104,66911.1%–

31Monroe County, WIWI46,57210.9%–

32Eau Claire County, WIWI109,03310.9%–

33Dunn County, WIWI46,22310.8%–

34Polk County, WIWI45,80310.6%–

35Douglas County, WIWI43,99010.5%–

36Iron County, WIWI6,12710.4%–

37Winnebago County, WIWI174,21810.4%–

38Jackson County, WIWI20,99910.3%–

39Dodge County, WIWI89,09710.2%–

40Racine County, WIWI198,91910.2%–

41Sawyer County, WIWI18,84610.0%–

42Rusk County, WIWI14,1469.8%–

43Waupaca County, WIWI51,4619.8%–

44Brown County, WIWI275,8039.8%–

45Outagamie County, WIWI195,8949.7%–

46Door County, WIWI30,6169.6%–

47Price County, WIWI13,9889.5%–

48Bayfield County, WIWI16,7879.4%–

49Burnett County, WIWI17,2239.4%–

50Green Lake County, WIWI19,3059.3%–

51Portage County, WIWI71,9439.3%–

52Barron County, WIWI46,4849.2%–

53Langlade County, WIWI19,5349.1%–

54Lincoln County, WIWI28,4039.0%–

55Oconto County, WIWI40,1958.9%–

56Marinette County, WIWI42,5748.9%–

57Wood County, WIWI74,0608.8%–

58Sheboygan County, WIWI118,0478.7%–

59Waushara County, WIWI25,2238.7%–

60Calumet County, WIWI53,9828.7%–

61Manitowoc County, WIWI81,7108.6%–

62Ashland County, WIWI16,2038.2%–

63Pepin County, WIWI7,5138.1%–

64Milwaukee County, WIWI924,2167.9%–

65Trempealeau County, WIWI31,1717.7%–

66Marathon County, WIWI139,4327.6%–

67Kewaunee County, WIWI20,7586.9%–

68Buffalo County, WIWI13,3186.9%–

69Shawano County, WIWI41,5606.7%–

70Clark County, WIWI35,0526.6%–

71Taylor County, WIWI20,1186.5%–

72Menominee County, WIWI4,1990.7%–

SHOWING 1–72 OF 72

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