RANKING · 2024 ACS · 72 SHOWN OF 72

Largest Irish population, Wisconsin counties

Wisconsin counties ranked by the number of residents who are Irish ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 72 counties in Wisconsin that qualify, ranked against each other statewide. The median across all 72 is 4,374. Biggest climber in the top 100 since 2020: Waushara County, WI, up 9 places to #45.

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WisconsinAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH POPULATIONVS 2010

01▲1Dane County, WIWI590,37574,465+7%

02▼1Milwaukee County, WIWI924,21670,714−17%

03Waukesha County, WIWI417,21050,482−11%

04Brown County, WIWI275,80325,5130%

05Rock County, WIWI166,47221,418−14%

06▲2Outagamie County, WIWI195,89419,533−8%

07▼1Racine County, WIWI198,91919,207+1%

08▼1Kenosha County, WIWI168,44818,021−17%

09Winnebago County, WIWI174,21817,3440%

10La Crosse County, WIWI121,33916,264+4%

11Washington County, WIWI139,23815,2710%

12Walworth County, WIWI106,12714,109−10%

13▲2St. Croix County, WIWI98,27611,564+5%

14▼1Eau Claire County, WIWI109,03311,004−1%

15▲3Ozaukee County, WIWI94,34610,996−4%

16▲1Marathon County, WIWI139,43210,892+3%

17▼3Fond du Lac County, WIWI104,66910,513−16%

18▲1Sheboygan County, WIWI118,04710,467+1%

19▼3Jefferson County, WIWI86,5059,535+9%

20Dodge County, WIWI89,0978,704−10%

21Sauk County, WIWI66,6528,036−8%

22▲3Portage County, WIWI71,9437,690−4%

23▲1Manitowoc County, WIWI81,7107,623+2%

24▼1Columbia County, WIWI58,1327,251−17%

25▲1Grant County, WIWI52,4466,959−17%

26▲1Wood County, WIWI74,0606,740−19%

27▼5Chippewa County, WIWI67,6146,199−21%

28Pierce County, WIWI43,5195,810−3%

29▲1Waupaca County, WIWI51,4614,958−19%

30▼1Monroe County, WIWI46,5724,885−10%

31▲3Douglas County, WIWI43,9904,856−7%

32▲4Oneida County, WIWI38,1314,811+5%

33▼2Dunn County, WIWI46,2234,623+1%

34▼1Polk County, WIWI45,8034,5300%

35Calumet County, WIWI53,9824,479−1%

36▲1Barron County, WIWI46,4844,374−9%

37▼5Green County, WIWI37,2274,264+1%

38▲4Oconto County, WIWI40,1953,755+7%

39▼1Iowa County, WIWI23,9513,578−20%

40▲5Door County, WIWI30,6163,415+15%

41▼2Juneau County, WIWI26,6493,206−22%

42▼1Vernon County, WIWI31,4432,858−16%

43▼3Marinette County, WIWI42,5742,851−34%

44▲3Vilas County, WIWI23,7612,686+7%

45▲9Waushara County, WIWI25,2232,626−9%

46▼2Shawano County, WIWI41,5602,619−17%

47▲1Lafayette County, WIWI17,4782,573−28%

48▲2Adams County, WIWI21,7522,526−8%

49Lincoln County, WIWI28,4032,439−11%

50▼4Richland County, WIWI17,0362,377−25%

51▼8Crawford County, WIWI15,9102,313−17%

52▼1Clark County, WIWI35,0522,251−15%

53Jackson County, WIWI20,9992,068−3%

54▼2Trempealeau County, WIWI31,1711,978−24%

55Marquette County, WIWI15,9271,971−15%

56▲1Green Lake County, WIWI19,3051,884+13%

57▲2Sawyer County, WIWI18,8461,825+1%

58▲3Bayfield County, WIWI16,7871,814+31%

59▼3Washburn County, WIWI17,0871,801−2%

60▼2Langlade County, WIWI19,5341,621−42%

61▼1Burnett County, WIWI17,2231,505−23%

62▲4Ashland County, WIWI16,2031,476−16%

63▲1Taylor County, WIWI20,1181,449−15%

64▼2Kewaunee County, WIWI20,7581,316+3%

65▼2Rusk County, WIWI14,1461,284−17%

66▼1Price County, WIWI13,9881,210+4%

67▲1Buffalo County, WIWI13,3181,045+8%

68▼1Forest County, WIWI9,574919−29%

69▲1Iron County, WIWI6,127648+10%

70▲1Pepin County, WIWI7,513526−28%

71▼2Florence County, WIWI4,748481−12%

72Menominee County, WIWI4,19948−52%

SHOWING 1–72 OF 72

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES