Wisconsin Population By County in 2021 (ACS-5Yrs)
Updated on February 28, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the total population of Wisconsin was 5.87M. Among all Wisconsin counties, Milwaukee was the most populated county (939.12K), followed by Dane (555.47K), and then Waukesha (405.33K).
On the other hand, the least populated counties were: Menominee (4.32K), Florence (4.54K), and Iron (6.07K).
The chart and table below shows the population of each county and the percentage of Wisconsin population in each county.
You can see similar information for other states and by state for the United States.
Related Topics: Wisconsin ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates, 2021 Census.
Wisconsin Population By County in 2021
Wisconsin Population By County in 2021
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| County | Population | % of State Population |
|---|---|---|
| Adams | 20505 | 0.35 |
| Ashland | 16002 | 0.27 |
| Barron | 46529 | 0.79 |
| Bayfield | 16031 | 0.27 |
| Brown | 267364 | 4.55 |
| Buffalo | 13314 | 0.23 |
| Burnett | 16356 | 0.28 |
| Calumet | 52128 | 0.89 |
| Chippewa | 65877 | 1.12 |
| Clark | 34655 | 0.59 |
| Columbia | 58219 | 0.99 |
| Crawford | 16167 | 0.28 |
| Dane | 555474 | 9.46 |
| Dodge | 89274 | 1.52 |
| Door | 29713 | 0.51 |
| Douglas | 44034 | 0.75 |
| Dunn | 45254 | 0.77 |
| Eau Claire | 105206 | 1.79 |
| Florence | 4542 | 0.08 |
| Fond du Lac | 103890 | 1.77 |
| Forest | 9184 | 0.16 |
| Grant | 52210 | 0.89 |
| Green | 37098 | 0.63 |
| Green Lake | 18990 | 0.32 |
| Iowa | 23715 | 0.40 |
| Iron | 6074 | 0.10 |
| Jackson | 21004 | 0.36 |
| Jefferson | 84808 | 1.44 |
| Juneau | 26595 | 0.45 |
| Kenosha | 168743 | 2.87 |
| Kewaunee | 20535 | 0.35 |
| La Crosse | 120291 | 2.05 |
| Lafayette | 16662 | 0.28 |
| Langlade | 19469 | 0.33 |
| Lincoln | 28378 | 0.48 |
| Manitowoc | 81103 | 1.38 |
| Marathon | 137597 | 2.34 |
| Marinette | 41720 | 0.71 |
| Marquette | 15515 | 0.26 |
| Menominee | 4318 | 0.07 |
| Milwaukee | 939123 | 15.99 |
| Monroe | 46091 | 0.79 |
| Oconto | 38691 | 0.66 |
| Oneida | 37468 | 0.64 |
| Outagamie | 189620 | 3.23 |
| Ozaukee | 91029 | 1.55 |
| Pepin | 7328 | 0.13 |
| Pierce | 42204 | 0.72 |
| Polk | 44806 | 0.76 |
| Portage | 70378 | 1.20 |
| Price | 14003 | 0.24 |
| Racine | 197379 | 3.36 |
| Richland | 17353 | 0.30 |
| Rock | 163522 | 2.79 |
| Rusk | 14182 | 0.24 |
| St. Croix | 92495 | 1.58 |
| Sauk | 65428 | 1.11 |
| Sawyer | 17813 | 0.30 |
| Shawano | 40836 | 0.70 |
| Sheboygan | 117528 | 2.00 |
| Taylor | 19960 | 0.34 |
| Trempealeau | 30504 | 0.52 |
| Vernon | 30719 | 0.52 |
| Vilas | 22813 | 0.39 |
| Walworth | 105945 | 1.80 |
| Washburn | 16561 | 0.28 |
| Washington | 136300 | 2.32 |
| Waukesha | 405332 | 6.90 |
| Waupaca | 51769 | 0.88 |
| Waushara | 24527 | 0.42 |
| Winnebago | 171304 | 2.92 |
| Wood | 74107 | 1.26 |