Ranking of Wisconsin Counties By Population with Irish Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 614.20K people in Wisconsin with Irish ancestry. Among all Wisconsin counties, Milwaukee County had the highest population with Irish ancestry (72.17K), followed by Dane County (71.61K), and Waukesha County (52.13K).
The chart and table below shows the top 10 counties with high number of people with Irish ancestry.
You can see similar information for other states and for other ancestry groups in Wisconsin.
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Related Topics: Wisconsin ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Wisconsin Counties By Population with Irish Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Milwaukee County | 72171 |
| 2 | Dane County | 71613 |
| 3 | Waukesha County | 52125 |
| 4 | Brown County | 26321 |
| 5 | Rock County | 22335 |
| 6 | Racine County | 19611 |
| 7 | Kenosha County | 18617 |
| 8 | Outagamie County | 18141 |
| 9 | Winnebago County | 17483 |
| 10 | La Crosse County | 17060 |
| 11 | Washington County | 14863 |
| 12 | Walworth County | 14558 |
| 13 | Fond du Lac County | 11460 |
| 14 | Eau Claire County | 10967 |
| 15 | Ozaukee County | 10386 |
| 16 | Marathon County | 10375 |
| 17 | St. Croix County | 10312 |
| 18 | Jefferson County | 9778 |
| 19 | Sheboygan County | 9676 |
| 20 | Dodge County | 8691 |
| 21 | Sauk County | 8450 |
| 22 | Columbia County | 7324 |
| 23 | Chippewa County | 7256 |
| 24 | Portage County | 7030 |
| 25 | Manitowoc County | 6991 |
| 26 | Wood County | 6853 |
| 27 | Grant County | 6748 |
| 28 | Pierce County | 5749 |
| 29 | Dunn County | 5013 |
| 30 | Waupaca County | 4987 |
| 31 | Monroe County | 4943 |
| 32 | Douglas County | 4690 |
| 33 | Oneida County | 4618 |
| 34 | Green County | 4606 |
| 35 | Polk County | 4441 |
| 36 | Calumet County | 4321 |
| 37 | Barron County | 3883 |
| 38 | Iowa County | 3635 |
| 39 | Oconto County | 3457 |
| 40 | Marinette County | 3438 |
| 41 | Juneau County | 3386 |
| 42 | Vernon County | 3148 |
| 43 | Door County | 2932 |
| 44 | Crawford County | 2713 |
| 45 | Shawano County | 2619 |
| 46 | Lafayette County | 2512 |
| 47 | Lincoln County | 2461 |
| 48 | Richland County | 2459 |
| 49 | Vilas County | 2424 |
| 50 | Adams County | 2418 |
| 51 | Trempealeau County | 2316 |
| 52 | Waushara County | 2292 |
| 53 | Clark County | 2212 |
| 54 | Jackson County | 2112 |
| 55 | Washburn County | 2029 |
| 56 | Marquette County | 2012 |
| 57 | Green Lake County | 1981 |
| 58 | Sawyer County | 1717 |
| 59 | Langlade County | 1702 |
| 60 | Bayfield County | 1622 |
| 61 | Kewaunee County | 1430 |
| 62 | Rusk County | 1411 |
| 63 | Price County | 1369 |
| 64 | Taylor County | 1361 |
| 65 | Burnett County | 1353 |
| 66 | Ashland County | 1348 |
| 67 | Forest County | 1084 |
| 68 | Buffalo County | 921 |
| 69 | Iron County | 723 |
| 70 | Pepin County | 585 |
| 71 | Florence County | 549 |
| 72 | Menominee County | 24 |
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