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)

Clark County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 72 counties in 2020, at 16.5%. Ozaukee County had the lowest, at 4.7%. The median was 8.6% and the figure for Wisconsin was 7.8%. Source: the U.S. Census Bureau.

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Highest16.5Clark County
Lowest4.7Ozaukee County
Median8.672 counties
Wisconsin7.8History

Map of counties, 2020

Adams County: 9 %Ashland County: 10.6 %Barron County: 10 %Bayfield County: 10.2 %Brown County: 8.2 %Buffalo County: 8.8 %Burnett County: 10.1 %Calumet County: 5.5 %Chippewa County: 8 %Clark County: 16.5 %Columbia County: 7.4 %Crawford County: 8.2 %Dane County: 5.3 %Dodge County: 6.9 %Door County: 8.6 %Douglas County: 7.3 %Dunn County: 8.3 %Eau Claire County: 9.2 %Florence County: 9.4 %Fond du Lac County: 6.9 %Forest County: 13.6 %Grant County: 8.7 %Green County: 7.6 %Green Lake County: 10.7 %Iowa County: 6 %Iron County: 8.8 %Jackson County: 12.2 %Jefferson County: 7.1 %Juneau County: 9.1 %Kenosha County: 8.3 %Kewaunee County: 8 %La Crosse County: 6.7 %Lafayette County: 10.2 %Langlade County: 9.2 %Lincoln County: 7.5 %Manitowoc County: 6.8 %Marathon County: 7.9 %Marinette County: 8.2 %Marquette County: 8.7 %Menominee County: 11.4 %Milwaukee County: 10.1 %Monroe County: 9.7 %Oconto County: 8.5 %Oneida County: 6.9 %Outagamie County: 7.6 %Ozaukee County: 4.7 %Pepin County: 9.7 %Pierce County: 6.4 %Polk County: 8.2 %Portage County: 7.7 %Price County: 7.4 %Racine County: 7.9 %Richland County: 10 %Rock County: 8.8 %Rusk County: 9 %St. Croix County: 5.8 %Sauk County: 8.8 %Sawyer County: 12.7 %Shawano County: 10.6 %Sheboygan County: 7 %Taylor County: 9 %Trempealeau County: 9 %Vernon County: 11 %Vilas County: 11.1 %Walworth County: 8.9 %Washburn County: 9 %Washington County: 5.1 %Waukesha County: 4.9 %Waupaca County: 7.9 %Waushara County: 10 %Winnebago County: 6.1 %Wood County: 7.7 %
  • Under 6.9
  • 6.9 to 7.8
  • 7.8 to 8.6
  • 8.6 to 9
  • 9 to 10
  • 10 and over
%, 2020. 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, 2020

Clark County: 16.5 %Clark County16.5Forest County: 13.6 %Forest County13.6Sawyer County: 12.7 %Sawyer County12.7Jackson County: 12.2 %Jackson County12.2Menominee County: 11.4 %Menominee County11.4Vilas County: 11.1 %Vilas County11.1Vernon County: 11 %Vernon County11Green Lake County: 10.7 %Green Lake County10.7Ashland County: 10.6 %Ashland County10.6Shawano County: 10.6 %Shawano County10.6Bayfield County: 10.2 %Bayfield County10.2Lafayette County: 10.2 %Lafayette County10.2Burnett County: 10.1 %Burnett County10.1Milwaukee County: 10.1 %Milwaukee County10.1Barron County: 10 %Barron County10Richland County: 10 %Richland County10Waushara County: 10 %Waushara County10Monroe County: 9.7 %Monroe County9.7Pepin County: 9.7 %Pepin County9.7Florence County: 9.4 %Florence County9.4Eau Claire County: 9.2 %Eau Claire County9.2Langlade County: 9.2 %Langlade County9.2Juneau County: 9.1 %Juneau County9.1Adams County: 9 %Adams County9Rusk County: 9 %Rusk County9Taylor County: 9 %Taylor County9Trempealeau County: 9 %Trempealeau County9Washburn County: 9 %Washburn County9Walworth County: 8.9 %Walworth County8.9Buffalo County: 8.8 %Buffalo County8.8Iron County: 8.8 %Iron County8.8Rock County: 8.8 %Rock County8.8Sauk County: 8.8 %Sauk County8.8Grant County: 8.7 %Grant County8.7Marquette County: 8.7 %Marquette County8.7Door County: 8.6 %Door County8.6Oconto County: 8.5 %Oconto County8.5Dunn County: 8.3 %Dunn County8.3Kenosha County: 8.3 %Kenosha County8.3Brown County: 8.2 %Brown County8.2Clark County: 16.5 %Clark County16.5Forest County: 13.6 %Forest County13.6Sawyer County: 12.7 %Sawyer County12.7Jackson County: 12.2 %Jackson County12.2Menominee County: 11.4 %Menominee County11.4Vilas County: 11.1 %Vilas County11.1Vernon County: 11 %Vernon County11Green Lake County: 10.7 %Green Lake County10.7Ashland County: 10.6 %Ashland County10.6Shawano County: 10.6 %Shawano County10.6Bayfield County: 10.2 %Bayfield County10.2Lafayette County: 10.2 %Lafayette County10.2Burnett County: 10.1 %Burnett County10.1Milwaukee County: 10.1 %Milwaukee County10.1Barron County: 10 %Barron County10Richland County: 10 %Richland County10Waushara County: 10 %Waushara County10Monroe County: 9.7 %Monroe County9.7Pepin County: 9.7 %Pepin County9.7Florence County: 9.4 %Florence County9.4Eau Claire County: 9.2 %Eau Claire County9.2Langlade County: 9.2 %Langlade County9.2Juneau County: 9.1 %Juneau County9.1Adams County: 9 %Adams County9Rusk County: 9 %Rusk County9Taylor County: 9 %Taylor County9Trempealeau County: 9 %Trempealeau County9Washburn County: 9 %Washburn County9Walworth County: 8.9 %Walworth County8.9Buffalo County: 8.8 %Buffalo County8.8Iron County: 8.8 %Iron County8.8Rock County: 8.8 %Rock County8.8Sauk County: 8.8 %Sauk County8.8Grant County: 8.7 %Grant County8.7Marquette County: 8.7 %Marquette County8.7Door County: 8.6 %Door County8.6Oconto County: 8.5 %Oconto County8.5Dunn County: 8.3 %Dunn County8.3Kenosha County: 8.3 %Kenosha County8.3Brown County: 8.2 %Brown County8.2
%. 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

RankCounties2020 (%)Change on 2019
1Clark County16.5-0.5 pts
2Forest County13.6+1.5 pts
3Sawyer County12.7+0.3 pts
4Jackson County12.2+0.9 pts
5Menominee County11.4+1.1 pts
6Vilas County11.1-0.8 pts
7Vernon County11+0.2 pts
8Green Lake County10.7+0.4 pts
9Ashland County10.60 pts
9Shawano County10.6+0.4 pts
11Bayfield County10.2-1.6 pts
11Lafayette County10.2-2.5 pts
13Burnett County10.10 pts
13Milwaukee County10.1-0.5 pts
15Barron County10-0.4 pts
15Richland County10-0.2 pts
15Waushara County10-0.3 pts
18Monroe County9.7-0.6 pts
18Pepin County9.7+1.4 pts
20Florence County9.4+0.3 pts
21Eau Claire County9.2+1 pts
21Langlade County9.2+0.3 pts
23Juneau County9.1-1.7 pts
24Adams County9-0.9 pts
24Rusk County9-1.6 pts
24Taylor County9-0.6 pts
24Trempealeau County9-0.4 pts
24Washburn County9+0.2 pts
29Walworth County8.9-0.6 pts
30Buffalo County8.8-0.8 pts
30Iron County8.8+0.6 pts
30Rock County8.8+0.5 pts
30Sauk County8.8-0.6 pts
34Grant County8.70 pts
34Marquette County8.7-1 pts
36Door County8.6-0.6 pts
37Oconto County8.5+0.8 pts
38Dunn County8.3+0.7 pts
38Kenosha County8.3-0.9 pts
40Brown County8.2-0.9 pts
40Crawford County8.2+0.2 pts
40Marinette County8.2+0.4 pts
40Polk County8.2+0.6 pts
44Chippewa County8+0.4 pts
44Kewaunee County8+0.4 pts
46Marathon County7.9+0.2 pts
46Racine County7.9-0.7 pts
46Waupaca County7.9+0.4 pts
49Portage County7.7+0.1 pts
49Wood County7.7+1.1 pts
51Green County7.6+0.2 pts
51Outagamie County7.6-0.2 pts
53Lincoln County7.5+0.9 pts
54Columbia County7.4+0.8 pts
54Price County7.4-0.6 pts
56Douglas County7.3-0.6 pts
57Jefferson County7.1-0.3 pts
58Sheboygan County7-0.3 pts
59Dodge County6.9-0.1 pts
59Fond du Lac County6.9+0.1 pts
59Oneida County6.9-0.9 pts
62Manitowoc County6.8-0.6 pts
63La Crosse County6.7+0.6 pts
64Pierce County6.4+0.2 pts
65Winnebago County6.1-1 pts
66Iowa County6-0.8 pts
67St. Croix County5.8+0.7 pts
68Calumet County5.5-0.1 pts
69Dane County5.3-0.4 pts
70Washington County5.1-0.1 pts
71Waukesha County4.9+0.2 pts
72Ozaukee County4.70 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-2020-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), 2020) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-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), 2020. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties?period=2020. 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), 2020. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties?period=2020.

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), 2020 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties?period=2020 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_wisconsin_by_2020,
  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), 2020}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2020-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties?period=2020. 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-2020-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), 2020
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-2020-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties?period=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties?period=2020.
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-2020-csv.zip. Retrieved 2026-10-12.
ER  -
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Questions

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

Clark County, with 16.5% in 2020, 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 4.7% in 2020.

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