Ranking of Wisconsin Counties By Population in 2020
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2020, the Population for Wisconsin was 5.90M. Among all Wisconsin counties, Milwaukee County had the highest population (938.61K), followed by Dane County (562.62K), and Waukesha County (407.52K).
The chart below shows the top 10 counties, and the table below shows the ranking of all Wisconsin counties.
You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.
Related Topics: Wisconsin Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage), 2020 Census.
See this for other years:
Ranking of Wisconsin Counties By Population in 2020
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| Rank | County | Population |
|---|---|---|
| 1 | Milwaukee County | 938609 |
| 2 | Dane County | 562620 |
| 3 | Waukesha County | 407518 |
| 4 | Brown County | 268966 |
| 5 | Racine County | 198065 |
| 6 | Outagamie County | 190973 |
| 7 | Winnebago County | 171796 |
| 8 | Kenosha County | 169202 |
| 9 | Rock County | 163761 |
| 10 | Marathon County | 138114 |
| 11 | Washington County | 136811 |
| 12 | La Crosse County | 120943 |
| 13 | Sheboygan County | 118058 |
| 14 | Eau Claire County | 105877 |
| 15 | Walworth County | 105310 |
| 16 | Fond du Lac County | 104156 |
| 17 | St. Croix County | 93893 |
| 18 | Ozaukee County | 91627 |
| 19 | Dodge County | 89344 |
| 20 | Jefferson County | 86208 |
| 21 | Manitowoc County | 81412 |
| 22 | Wood County | 74189 |
| 23 | Portage County | 70412 |
| 24 | Chippewa County | 66346 |
| 25 | Sauk County | 65793 |
| 26 | Columbia County | 58520 |
| 27 | Calumet County | 52478 |
| 28 | Grant County | 51979 |
| 29 | Waupaca County | 51806 |
| 30 | Barron County | 46723 |
| 31 | Monroe County | 46299 |
| 32 | Dunn County | 45453 |
| 33 | Polk County | 45029 |
| 34 | Douglas County | 44348 |
| 35 | Pierce County | 42229 |
| 36 | Marinette County | 41900 |
| 37 | Shawano County | 40869 |
| 38 | Oconto County | 39077 |
| 39 | Oneida County | 37877 |
| 40 | Green County | 37033 |
| 41 | Clark County | 34629 |
| 42 | Trempealeau County | 30813 |
| 43 | Vernon County | 30710 |
| 44 | Door County | 30119 |
| 45 | Lincoln County | 28429 |
| 46 | Juneau County | 26780 |
| 47 | Waushara County | 24550 |
| 48 | Iowa County | 23718 |
| 49 | Vilas County | 23097 |
| 50 | Jackson County | 21095 |
| 51 | Adams County | 20682 |
| 52 | Kewaunee County | 20563 |
| 53 | Taylor County | 19938 |
| 54 | Langlade County | 19466 |
| 55 | Green Lake County | 19027 |
| 56 | Sawyer County | 18119 |
| 57 | Richland County | 17283 |
| 58 | Washburn County | 16623 |
| 59 | Lafayette County | 16604 |
| 60 | Burnett County | 16578 |
| 61 | Bayfield County | 16238 |
| 62 | Crawford County | 16084 |
| 63 | Ashland County | 16015 |
| 64 | Marquette County | 15580 |
| 65 | Rusk County | 14181 |
| 66 | Price County | 14036 |
| 67 | Buffalo County | 13323 |
| 68 | Forest County | 9168 |
| 69 | Pepin County | 7343 |
| 70 | Iron County | 6140 |
| 71 | Florence County | 4563 |
| 72 | Menominee County | 4258 |