Ranking of Wisconsin Counties By Percentage of Population with Unclassified Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 1.06M people in Wisconsin with Unclassified ancestry (18.00% of Wisconsin population). Among all Wisconsin counties, Lafayette County had the highest percentage of its population with Unclassified ancestry (31.45%), followed by Grant County (30.52%), and Chippewa County (26.07%).
The chart and table below shows the top 10 counties with high percentage of its population having Unclassified 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 Percentage of Population with Unclassified Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Lafayette County | 31.45 |
| 2 | Grant County | 30.52 |
| 3 | Chippewa County | 26.07 |
| 4 | Douglas County | 25.98 |
| 5 | Rusk County | 25.91 |
| 6 | Taylor County | 25.87 |
| 7 | Clark County | 25.64 |
| 8 | Iowa County | 25.42 |
| 9 | Jackson County | 24.48 |
| 10 | Monroe County | 24.47 |
| 11 | Florence County | 23.34 |
| 12 | Pepin County | 23.16 |
| 13 | Juneau County | 23.05 |
| 14 | Marinette County | 22.49 |
| 15 | Crawford County | 22.32 |
| 16 | Pierce County | 22.27 |
| 17 | Oconto County | 21.71 |
| 18 | Adams County | 21.60 |
| 19 | Columbia County | 21.37 |
| 20 | Eau Claire County | 21.20 |
| 21 | Ashland County | 20.95 |
| 22 | Richland County | 20.90 |
| 23 | Barron County | 20.78 |
| 24 | Forest County | 20.59 |
| 25 | Washburn County | 20.52 |
| 26 | Rock County | 20.35 |
| 27 | Dunn County | 20.24 |
| 28 | Shawano County | 20.20 |
| 29 | Winnebago County | 19.91 |
| 30 | Green Lake County | 19.64 |
| 31 | Waupaca County | 19.49 |
| 32 | Sawyer County | 19.27 |
| 33 | Polk County | 19.25 |
| 34 | Kenosha County | 19.14 |
| 35 | St. Croix County | 19.12 |
| 36 | Jefferson County | 19.05 |
| 37 | Green County | 19.02 |
| 38 | Sauk County | 18.98 |
| 39 | Wood County | 18.96 |
| 40 | Brown County | 18.91 |
| 41 | Outagamie County | 18.70 |
| 42 | Walworth County | 18.69 |
| 43 | Burnett County | 18.61 |
| 44 | Buffalo County | 18.57 |
| 45 | Washington County | 18.46 |
| 46 | La Crosse County | 18.29 |
| 47 | Dodge County | 18.18 |
| 48 | Fond du Lac County | 17.80 |
| 49 | Lincoln County | 17.76 |
| 50 | Vernon County | 17.60 |
| 51 | Calumet County | 17.54 |
| 52 | Langlade County | 17.53 |
| 53 | Waushara County | 17.48 |
| 54 | Kewaunee County | 17.23 |
| 55 | Waukesha County | 17.04 |
| 56 | Marquette County | 16.73 |
| 57 | Ozaukee County | 16.72 |
| 58 | Oneida County | 16.37 |
| 59 | Vilas County | 16.27 |
| 60 | Trempealeau County | 16.26 |
| 61 | Manitowoc County | 16.17 |
| 62 | Racine County | 16.11 |
| 63 | Dane County | 16.05 |
| 64 | Marathon County | 15.88 |
| 65 | Sheboygan County | 15.72 |
| 66 | Iron County | 15.66 |
| 67 | Door County | 15.05 |
| 68 | Price County | 14.94 |
| 69 | Milwaukee County | 14.52 |
| 70 | Bayfield County | 14.07 |
| 71 | Portage County | 12.96 |
| 72 | Menominee County | 8.55 |
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