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What are the largest counties in Wisconsin?

Milwaukee County is the largest county in Wisconsin, with 924,216 residents in 2025 (Census PEP). Dane County (590,375) and Waukesha County (417,210) come next.

Data as of 2025 · updated

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All 72 ranked Wisconsin counties

Wisconsin counties ranked by population
RankCountyResidents 2025Change 2020–25
1Milwaukee County924,216−1.5%
2Dane County590,375+4.9%
3Waukesha County417,210+2.4%
4Brown County275,803+2.5%
5Racine County198,919+0.4%
6Outagamie County195,894+2.6%
7Winnebago County174,218+1.4%
8Kenosha County168,448−0.4%
9Rock County166,472+1.7%
10Marathon County139,432+1.0%
11Washington County139,238+1.8%
12La Crosse County121,339+0.3%
13Sheboygan County118,047+0.0%
14Eau Claire County109,033+3.0%
15Walworth County106,127+0.8%
16Fond du Lac County104,669+0.5%
17St. Croix County98,276+4.7%
18Ozaukee County94,346+3.0%
19Dodge County89,097−0.3%
20Jefferson County86,505+0.3%
21Manitowoc County81,710+0.4%
22Wood County74,060−0.2%
23Portage County71,943+2.2%
24Chippewa County67,614+1.9%
25Sauk County66,652+1.3%
26Columbia County58,132−0.7%
27Calumet County53,982+2.9%
28Grant County52,446+0.9%
29Waupaca County51,461−0.7%
30Monroe County46,572+0.6%
31Barron County46,484−0.5%
32Dunn County46,223+1.7%
33Polk County45,803+1.7%
34Douglas County43,990−0.8%
35Pierce County43,519+3.1%
36Marinette County42,574+1.6%
37Shawano County41,560+1.7%
38Oconto County40,195+2.9%
39Oneida County38,131+0.7%
40Green County37,227+0.5%
41Clark County35,052+1.2%
42Vernon County31,443+2.4%
43Trempealeau County31,171+1.1%
44Door County30,616+1.6%
45Lincoln County28,403−0.1%
46Juneau County26,649−0.5%
47Waushara County25,223+2.8%
48Iowa County23,951+1.0%
49Vilas County23,761+2.9%
50Adams County21,752+5.1%
51Jackson County20,999−0.5%
52Kewaunee County20,758+1.0%
53Taylor County20,118+0.9%
54Langlade County19,534+0.4%
55Green Lake County19,305+1.5%
56Sawyer County18,846+4.0%
57Lafayette County17,478+5.2%
58Burnett County17,223+3.9%
59Washburn County17,087+2.8%
60Richland County17,036−1.4%
61Bayfield County16,787+3.4%
62Ashland County16,203+1.1%
63Marquette County15,927+2.1%
64Crawford County15,910−1.1%
65Rusk County14,146−0.2%
66Price County13,988−0.3%
67Buffalo County13,318−0.1%
68Forest County9,574+4.4%
69Pepin County7,513+2.2%
70Iron County6,127−0.3%
71Florence County4,748+4.0%
72Menominee County4,199−1.4%

How this is ranked

The Census Bureau's July 1 resident population estimates for 2025, largest first, with the change since 2020. Counties with fewer than 1,000 residents are not ranked. Areas without an estimate for the same year as the others are not ranked.

Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025). Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how ranks and figures are built.

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Questions

What is the largest county in Wisconsin?

Milwaukee County is the largest county in Wisconsin, with 924,216 residents in 2025 (Census PEP). Dane County (590,375) and Waukesha County (417,210) come next.

How is this ranking calculated?

The Census Bureau's July 1 resident population estimates for 2025, largest first, with the change since 2020. Counties with fewer than 1,000 residents are not ranked. Areas without an estimate for the same year as the others are not ranked.

More rankings for Wisconsin

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