Ranking of Wisconsin Counties By Percentage of Population with Polish Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 481.13K people in Wisconsin with Polish ancestry (8.19% of Wisconsin population). Among all Wisconsin counties, Portage County had the highest percentage of its population with Polish ancestry (29.68%), followed by Marathon County (16.14%), and Trempealeau County (15.71%).

The chart and table below shows the top 10 counties with high percentage of its population having Polish ancestry.

You can see similar information for other states and for other ancestry groups in Wisconsin.

Data Source: US Census Bureau.
Ranking of Wisconsin Counties By Percentage of Population with Polish Ancestry in 2021
Portage County
Marathon County
Trempealeau County
Marinette County
Buffalo County
Waukesha County
Wood County
Langlade County
Forest County
Iron County
Ranking of Wisconsin Counties By Percentage of Population with Polish Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Portage County 29.68
2 Marathon County 16.14
3 Trempealeau County 15.71
4 Marinette County 13.83
5 Buffalo County 12.93
6 Waukesha County 12.47
7 Wood County 11.64
8 Langlade County 11.54
9 Forest County 11.32
10 Iron County 11.29
11 Oconto County 11.11
12 Oneida County 10.87
13 Washington County 10.81
14 Green Lake County 10.60
15 Kewaunee County 10.58
16 Waushara County 10.54
17 Taylor County 10.52
18 Vilas County 9.91
19 Florence County 9.69
20 Marquette County 9.68
21 Juneau County 9.57
22 Lincoln County 9.43
23 Milwaukee County 9.34
24 Adams County 9.31
25 Brown County 9.22
26 Rusk County 9.14
27 Ozaukee County 9.12
28 Manitowoc County 8.81
29 Shawano County 8.78
30 Walworth County 8.60
31 Clark County 8.24
32 Racine County 8.16
33 Ashland County 7.98
34 Winnebago County 7.97
35 Waupaca County 7.85
36 Douglas County 7.54
37 Kenosha County 7.42
38 Price County 7.36
39 Jefferson County 7.02
40 Bayfield County 6.95
41 Outagamie County 6.58
42 Dodge County 6.29
43 Calumet County 6.13
44 Chippewa County 5.95
45 Door County 5.79
46 Columbia County 5.77
47 La Crosse County 5.69
48 Eau Claire County 5.65
48 Sawyer County 5.65
49 Fond du Lac County 5.47
50 Dane County 5.33
51 Jackson County 5.24
52 Washburn County 5.12
53 Dunn County 4.86
54 St. Croix County 4.81
55 Sheboygan County 4.55
56 Burnett County 4.46
57 Sauk County 4.41
58 Barron County 3.81
59 Pepin County 3.75
60 Rock County 3.72
61 Pierce County 3.69
62 Crawford County 3.58
63 Richland County 3.54
64 Polk County 3.41
65 Grant County 3.35
66 Monroe County 3.21
67 Green County 3.17
68 Vernon County 2.99
69 Iowa County 2.58
70 Lafayette County 2.05
71 Menominee County 1.09