Ranking of Wisconsin Counties By Total Voting-age Population (18yrs and over) from Census 2020

Updated on August 22, 2023.

According to the data from the US 2020 Census, as at April 2020, among all the counties in Wisconsin, Milwaukee County had the highest voting-age population (18 years and over) (720.45K), followed by Dane County (448.41K), and Waukesha County (318.19K).

The chart below shows the top 10 counties with high voting-age population, and the table below shows the ranking of all Wisconsin counties based on voting-age population.

You can also see the ranking of counties by population for other states as well as for the whole United States.

Ranking of Wisconsin Counties By Total Voting-age Population from Census 2020
Milwaukee
720.45K
Dane
448.41K
Waukesha
318.19K
Brown
206.13K
Racine
153.05K
Outagamie
146.19K
Winnebago
136.20K
Kenosha
131.45K
Rock
126.28K
Washington
107.03K
Ranking of Wisconsin Counties By Total Voting-age Population from Census 2020
Rank
County
Voting-age Population
1 Milwaukee County 720,446
2 Dane County 448,406
3 Waukesha County 318,193
4 Brown County 206,130
5 Racine County 153,051
6 Outagamie County 146,186
7 Winnebago County 136,202
8 Kenosha County 131,452
9 Rock County 126,282
10 Washington County 107,030
11 Marathon County 106,877
12 La Crosse County 96,611
13 Sheboygan County 92,434
14 Walworth County 84,970
15 Eau Claire County 83,793
16 Fond du Lac County 82,059
17 Ozaukee County 71,843
18 Dodge County 71,608
19 St. Croix County 70,347
20 Jefferson County 66,349
21 Manitowoc County 64,596
22 Wood County 58,544
23 Portage County 56,525
24 Chippewa County 51,536
25 Sauk County 51,197
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