Data / Rankings / Uninsured rate, ages 18 to 64 (US model-based estimate) / Counties in Wisconsin

Counties in Wisconsin by uninsured rate, ages 18 to 64 (US model-based estimate), 2024

Clark County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 72 counties in 2024, at 18.9%. Ozaukee County had the lowest, at 4.3%. The median was 7.6% and the figure for Wisconsin was 7.3%. Source: the U.S. Census Bureau.

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Highest18.9Clark County
Lowest4.3Ozaukee County
Median7.672 counties
Wisconsin7.3History

Map of counties, 2024

Adams County: 8.2 %Ashland County: 8 %Barron County: 8 %Bayfield County: 8.3 %Brown County: 7.3 %Buffalo County: 7.7 %Burnett County: 9.4 %Calumet County: 5.5 %Chippewa County: 7.4 %Clark County: 18.9 %Columbia County: 6.4 %Crawford County: 8.1 %Dane County: 5.2 %Dodge County: 6.3 %Door County: 7.9 %Douglas County: 6.5 %Dunn County: 7.1 %Eau Claire County: 6.7 %Florence County: 7.5 %Fond du Lac County: 6.8 %Forest County: 8.9 %Grant County: 9 %Green County: 6.3 %Green Lake County: 9 %Iowa County: 6.2 %Iron County: 6.6 %Jackson County: 8 %Jefferson County: 7.2 %Juneau County: 8.9 %Kenosha County: 7.5 %Kewaunee County: 7.1 %La Crosse County: 5.1 %Lafayette County: 11.6 %Langlade County: 9.4 %Lincoln County: 6.9 %Manitowoc County: 7.5 %Marathon County: 6.8 %Marinette County: 7.1 %Marquette County: 8.4 %Menominee County: 5.6 %Milwaukee County: 10.2 %Monroe County: 9.3 %Oconto County: 7.6 %Oneida County: 6.6 %Outagamie County: 6.2 %Ozaukee County: 4.3 %Pepin County: 7.6 %Pierce County: 5.3 %Polk County: 7.3 %Portage County: 6.6 %Price County: 7.4 %Racine County: 8.1 %Richland County: 8.8 %Rock County: 7.6 %Rusk County: 8.6 %St. Croix County: 5.2 %Sauk County: 8.3 %Sawyer County: 9.4 %Shawano County: 9 %Sheboygan County: 6.6 %Taylor County: 9.9 %Trempealeau County: 9.6 %Vernon County: 10.5 %Vilas County: 8 %Walworth County: 8.9 %Washburn County: 8.3 %Washington County: 5.1 %Waukesha County: 4.4 %Waupaca County: 7.9 %Waushara County: 9.9 %Winnebago County: 6.1 %Wood County: 7 %
  • Under 6.3
  • 6.3 to 7
  • 7 to 7.6
  • 7.6 to 8.1
  • 8.1 to 9
  • 9 and over
%, 2024. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2024

Clark County: 18.9 %Clark County18.9Lafayette County: 11.6 %Lafayette County11.6Vernon County: 10.5 %Vernon County10.5Milwaukee County: 10.2 %Milwaukee County10.2Taylor County: 9.9 %Taylor County9.9Waushara County: 9.9 %Waushara County9.9Trempealeau County: 9.6 %Trempealeau County9.6Burnett County: 9.4 %Burnett County9.4Langlade County: 9.4 %Langlade County9.4Sawyer County: 9.4 %Sawyer County9.4Monroe County: 9.3 %Monroe County9.3Grant County: 9 %Grant County9Green Lake County: 9 %Green Lake County9Shawano County: 9 %Shawano County9Forest County: 8.9 %Forest County8.9Juneau County: 8.9 %Juneau County8.9Walworth County: 8.9 %Walworth County8.9Richland County: 8.8 %Richland County8.8Rusk County: 8.6 %Rusk County8.6Marquette County: 8.4 %Marquette County8.4Bayfield County: 8.3 %Bayfield County8.3Sauk County: 8.3 %Sauk County8.3Washburn County: 8.3 %Washburn County8.3Adams County: 8.2 %Adams County8.2Crawford County: 8.1 %Crawford County8.1Racine County: 8.1 %Racine County8.1Ashland County: 8 %Ashland County8Barron County: 8 %Barron County8Jackson County: 8 %Jackson County8Vilas County: 8 %Vilas County8Door County: 7.9 %Door County7.9Waupaca County: 7.9 %Waupaca County7.9Buffalo County: 7.7 %Buffalo County7.7Oconto County: 7.6 %Oconto County7.6Pepin County: 7.6 %Pepin County7.6Rock County: 7.6 %Rock County7.6Florence County: 7.5 %Florence County7.5Kenosha County: 7.5 %Kenosha County7.5Manitowoc County: 7.5 %Manitowoc County7.5Chippewa County: 7.4 %Chippewa County7.4Clark County: 18.9 %Clark County18.9Lafayette County: 11.6 %Lafayette County11.6Vernon County: 10.5 %Vernon County10.5Milwaukee County: 10.2 %Milwaukee County10.2Taylor County: 9.9 %Taylor County9.9Waushara County: 9.9 %Waushara County9.9Trempealeau County: 9.6 %Trempealeau County9.6Burnett County: 9.4 %Burnett County9.4Langlade County: 9.4 %Langlade County9.4Sawyer County: 9.4 %Sawyer County9.4Monroe County: 9.3 %Monroe County9.3Grant County: 9 %Grant County9Green Lake County: 9 %Green Lake County9Shawano County: 9 %Shawano County9Forest County: 8.9 %Forest County8.9Juneau County: 8.9 %Juneau County8.9Walworth County: 8.9 %Walworth County8.9Richland County: 8.8 %Richland County8.8Rusk County: 8.6 %Rusk County8.6Marquette County: 8.4 %Marquette County8.4Bayfield County: 8.3 %Bayfield County8.3Sauk County: 8.3 %Sauk County8.3Washburn County: 8.3 %Washburn County8.3Adams County: 8.2 %Adams County8.2Crawford County: 8.1 %Crawford County8.1Racine County: 8.1 %Racine County8.1Ashland County: 8 %Ashland County8Barron County: 8 %Barron County8Jackson County: 8 %Jackson County8Vilas County: 8 %Vilas County8Door County: 7.9 %Door County7.9Waupaca County: 7.9 %Waupaca County7.9Buffalo County: 7.7 %Buffalo County7.7Oconto County: 7.6 %Oconto County7.6Pepin County: 7.6 %Pepin County7.6Rock County: 7.6 %Rock County7.6Florence County: 7.5 %Florence County7.5Kenosha County: 7.5 %Kenosha County7.5Manitowoc County: 7.5 %Manitowoc County7.5Chippewa County: 7.4 %Chippewa County7.4
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Clark County18.9+2.7 pts
2Lafayette County11.6+1.6 pts
3Vernon County10.5+0.5 pts
4Milwaukee County10.2+0.9 pts
5Taylor County9.9+1 pts
5Waushara County9.9+1.3 pts
7Trempealeau County9.6+1.5 pts
8Burnett County9.4+1.8 pts
8Langlade County9.4+1.2 pts
8Sawyer County9.4+0.4 pts
11Monroe County9.3+0.8 pts
12Grant County9+0.7 pts
12Green Lake County9+0.4 pts
12Shawano County9+1.3 pts
15Forest County8.9+0.2 pts
15Juneau County8.9+1.1 pts
15Walworth County8.9+0.9 pts
18Richland County8.8+1.1 pts
19Rusk County8.6+0.5 pts
20Marquette County8.4+1.4 pts
21Bayfield County8.3+1.1 pts
21Sauk County8.3+1.4 pts
21Washburn County8.3+0.3 pts
24Adams County8.2+0.7 pts
25Crawford County8.1+1.1 pts
25Racine County8.1+0.6 pts
27Ashland County8+1.3 pts
27Barron County80 pts
27Jackson County8+0.1 pts
27Vilas County8+0.4 pts
31Door County7.9+0.8 pts
31Waupaca County7.9+1 pts
33Buffalo County7.7+1 pts
34Oconto County7.6+1.2 pts
34Pepin County7.60 pts
34Rock County7.6+1.3 pts
37Florence County7.5+0.4 pts
37Kenosha County7.5+0.7 pts
37Manitowoc County7.5+1 pts
40Chippewa County7.4+0.7 pts
40Price County7.4+0.2 pts
42Brown County7.3+0.1 pts
42Polk County7.3+0.2 pts
44Jefferson County7.2+1.3 pts
45Dunn County7.1+1.1 pts
45Kewaunee County7.1+1.2 pts
45Marinette County7.1+0.9 pts
48Wood County7+1.3 pts
49Lincoln County6.9+0.4 pts
50Fond du Lac County6.8+1.1 pts
50Marathon County6.80 pts
52Eau Claire County6.7+0.5 pts
53Iron County6.6+0.5 pts
53Oneida County6.6+0.5 pts
53Portage County6.60 pts
53Sheboygan County6.6+0.1 pts
57Douglas County6.5+0.2 pts
58Columbia County6.4+0.6 pts
59Dodge County6.3+0.3 pts
59Green County6.3+0.7 pts
61Iowa County6.2+0.7 pts
61Outagamie County6.2+0.2 pts
63Winnebago County6.1+0.1 pts
64Menominee County5.6+0.7 pts
65Calumet County5.5+0.9 pts
66Pierce County5.3+0.8 pts
67Dane County5.2+0.5 pts
67St. Croix County5.2+0.2 pts
69La Crosse County5.1+0.4 pts
69Washington County5.1+1 pts
71Waukesha County4.4+0.8 pts
72Ozaukee County4.3+0.4 pts

Other periods

About this ranking

People aged 18 to 64 without health insurance coverage of any kind, as a percentage of all people aged 18 to 64. United States: Census Bureau Small Area Health Insurance Estimates (SAHIE) for states and counties, all races, both sexes and all income levels.

A model-based single-year estimate that combines the American Community Survey with administrative records and population estimates, so every county gets a figure. Covers states and counties only, because the SAHIE dataset files have no national row. The Census Bureau advises comparing years from 2008 on only; 2013 is the updated release. Working-age adults; the rate for everyone under 65 is uninsured_rate_under_65.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties (Counties in Wisconsin by uninsured rate, ages 18 to 64 (US model-based estimate), 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip

MLA 9

Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in Wisconsin by uninsured rate, ages 18 to 64 (US model-based estimate), 2024. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Counties in Wisconsin by uninsured rate, ages 18 to 64 (US model-based estimate), 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in Wisconsin by uninsured rate, ages 18 to 64 (US model-based estimate), 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_wisconsin_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in Wisconsin by uninsured rate, ages 18 to 64 (US model-based estimate), 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in Wisconsin by uninsured rate, ages 18 to 64 (US model-based estimate), 2024
PY  - 2026
DA  - 2026/08/06
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2024-csv.zip. Retrieved 2026-10-12.
ER  -
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Rank Counties in Wisconsin by uninsured rate, ages 18 to 64 (US model-based estimate) using official data, and cite the source.
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Questions

Which county has the highest uninsured rate, ages 18 to 64 (US model-based estimate)?

Clark County, with 18.9% in 2024, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 18 to 64 (US model-based estimate)?

Ozaukee County, with 4.3% in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, ages 18 to 64 (US model-based estimate): other rankings

Counties in Wisconsin: more rankings