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 2021, at 15.2%. Ozaukee County had the lowest, at 4.4%. The median was 7.9% and the figure for Wisconsin was 7.4%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest15.2Clark County
Lowest4.4Ozaukee County
Median7.972 counties
Wisconsin7.4History

Map of counties, 2021

Adams County: 9 %Ashland County: 9.6 %Barron County: 9.3 %Bayfield County: 9.7 %Brown County: 7.9 %Buffalo County: 7.8 %Burnett County: 8.6 %Calumet County: 4.8 %Chippewa County: 7.1 %Clark County: 15.2 %Columbia County: 6.7 %Crawford County: 6.9 %Dane County: 5.5 %Dodge County: 6.5 %Door County: 7.7 %Douglas County: 7.3 %Dunn County: 6.9 %Eau Claire County: 6.7 %Florence County: 8.5 %Fond du Lac County: 6.3 %Forest County: 11.4 %Grant County: 8.2 %Green County: 6.7 %Green Lake County: 9.3 %Iowa County: 5.9 %Iron County: 6.7 %Jackson County: 9.2 %Jefferson County: 7.1 %Juneau County: 8.8 %Kenosha County: 7.9 %Kewaunee County: 6.8 %La Crosse County: 5.9 %Lafayette County: 10.2 %Langlade County: 8.7 %Lincoln County: 6.7 %Manitowoc County: 7.1 %Marathon County: 7.4 %Marinette County: 8 %Marquette County: 8.1 %Menominee County: 8.7 %Milwaukee County: 10.1 %Monroe County: 9.5 %Oconto County: 7.2 %Oneida County: 7.1 %Outagamie County: 5.9 %Ozaukee County: 4.4 %Pepin County: 9.5 %Pierce County: 6.4 %Polk County: 7.2 %Portage County: 6.6 %Price County: 7.9 %Racine County: 8.3 %Richland County: 8.8 %Rock County: 8.1 %Rusk County: 8.6 %St. Croix County: 4.8 %Sauk County: 8.2 %Sawyer County: 10.3 %Shawano County: 8.9 %Sheboygan County: 6.6 %Taylor County: 8.5 %Trempealeau County: 8.4 %Vernon County: 9.9 %Vilas County: 10.4 %Walworth County: 8.1 %Washburn County: 8.3 %Washington County: 5.3 %Waukesha County: 4.6 %Waupaca County: 7.3 %Waushara County: 9 %Winnebago County: 6.2 %Wood County: 6.8 %
  • Under 6.5
  • 6.5 to 7
  • 7 to 7.9
  • 7.9 to 8.5
  • 8.5 to 9.3
  • 9.3 and over
%, 2021. 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, 2021

Clark County: 15.2 %Clark County15.2Forest County: 11.4 %Forest County11.4Vilas County: 10.4 %Vilas County10.4Sawyer County: 10.3 %Sawyer County10.3Lafayette County: 10.2 %Lafayette County10.2Milwaukee County: 10.1 %Milwaukee County10.1Vernon County: 9.9 %Vernon County9.9Bayfield County: 9.7 %Bayfield County9.7Ashland County: 9.6 %Ashland County9.6Monroe County: 9.5 %Monroe County9.5Pepin County: 9.5 %Pepin County9.5Barron County: 9.3 %Barron County9.3Green Lake County: 9.3 %Green Lake County9.3Jackson County: 9.2 %Jackson County9.2Adams County: 9 %Adams County9Waushara County: 9 %Waushara County9Shawano County: 8.9 %Shawano County8.9Juneau County: 8.8 %Juneau County8.8Richland County: 8.8 %Richland County8.8Langlade County: 8.7 %Langlade County8.7Menominee County: 8.7 %Menominee County8.7Burnett County: 8.6 %Burnett County8.6Rusk County: 8.6 %Rusk County8.6Florence County: 8.5 %Florence County8.5Taylor County: 8.5 %Taylor County8.5Trempealeau County: 8.4 %Trempealeau County8.4Racine County: 8.3 %Racine County8.3Washburn County: 8.3 %Washburn County8.3Grant County: 8.2 %Grant County8.2Sauk County: 8.2 %Sauk County8.2Marquette County: 8.1 %Marquette County8.1Rock County: 8.1 %Rock County8.1Walworth County: 8.1 %Walworth County8.1Marinette County: 8 %Marinette County8Brown County: 7.9 %Brown County7.9Kenosha County: 7.9 %Kenosha County7.9Price County: 7.9 %Price County7.9Buffalo County: 7.8 %Buffalo County7.8Door County: 7.7 %Door County7.7Marathon County: 7.4 %Marathon County7.4Clark County: 15.2 %Clark County15.2Forest County: 11.4 %Forest County11.4Vilas County: 10.4 %Vilas County10.4Sawyer County: 10.3 %Sawyer County10.3Lafayette County: 10.2 %Lafayette County10.2Milwaukee County: 10.1 %Milwaukee County10.1Vernon County: 9.9 %Vernon County9.9Bayfield County: 9.7 %Bayfield County9.7Ashland County: 9.6 %Ashland County9.6Monroe County: 9.5 %Monroe County9.5Pepin County: 9.5 %Pepin County9.5Barron County: 9.3 %Barron County9.3Green Lake County: 9.3 %Green Lake County9.3Jackson County: 9.2 %Jackson County9.2Adams County: 9 %Adams County9Waushara County: 9 %Waushara County9Shawano County: 8.9 %Shawano County8.9Juneau County: 8.8 %Juneau County8.8Richland County: 8.8 %Richland County8.8Langlade County: 8.7 %Langlade County8.7Menominee County: 8.7 %Menominee County8.7Burnett County: 8.6 %Burnett County8.6Rusk County: 8.6 %Rusk County8.6Florence County: 8.5 %Florence County8.5Taylor County: 8.5 %Taylor County8.5Trempealeau County: 8.4 %Trempealeau County8.4Racine County: 8.3 %Racine County8.3Washburn County: 8.3 %Washburn County8.3Grant County: 8.2 %Grant County8.2Sauk County: 8.2 %Sauk County8.2Marquette County: 8.1 %Marquette County8.1Rock County: 8.1 %Rock County8.1Walworth County: 8.1 %Walworth County8.1Marinette County: 8 %Marinette County8Brown County: 7.9 %Brown County7.9Kenosha County: 7.9 %Kenosha County7.9Price County: 7.9 %Price County7.9Buffalo County: 7.8 %Buffalo County7.8Door County: 7.7 %Door County7.7Marathon County: 7.4 %Marathon 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

RankCounties2021 (%)Change on 2020
1Clark County15.2-1.3 pts
2Forest County11.4-2.2 pts
3Vilas County10.4-0.7 pts
4Sawyer County10.3-2.4 pts
5Lafayette County10.20 pts
6Milwaukee County10.10 pts
7Vernon County9.9-1.1 pts
8Bayfield County9.7-0.5 pts
9Ashland County9.6-1 pts
10Monroe County9.5-0.2 pts
10Pepin County9.5-0.2 pts
12Barron County9.3-0.7 pts
12Green Lake County9.3-1.4 pts
14Jackson County9.2-3 pts
15Adams County90 pts
15Waushara County9-1 pts
17Shawano County8.9-1.7 pts
18Juneau County8.8-0.3 pts
18Richland County8.8-1.2 pts
20Langlade County8.7-0.5 pts
20Menominee County8.7-2.7 pts
22Burnett County8.6-1.5 pts
22Rusk County8.6-0.4 pts
24Florence County8.5-0.9 pts
24Taylor County8.5-0.5 pts
26Trempealeau County8.4-0.6 pts
27Racine County8.3+0.4 pts
27Washburn County8.3-0.7 pts
29Grant County8.2-0.5 pts
29Sauk County8.2-0.6 pts
31Marquette County8.1-0.6 pts
31Rock County8.1-0.7 pts
31Walworth County8.1-0.8 pts
34Marinette County8-0.2 pts
35Brown County7.9-0.3 pts
35Kenosha County7.9-0.4 pts
35Price County7.9+0.5 pts
38Buffalo County7.8-1 pts
39Door County7.7-0.9 pts
40Marathon County7.4-0.5 pts
41Douglas County7.30 pts
41Waupaca County7.3-0.6 pts
43Oconto County7.2-1.3 pts
43Polk County7.2-1 pts
45Chippewa County7.1-0.9 pts
45Jefferson County7.10 pts
45Manitowoc County7.1+0.3 pts
45Oneida County7.1+0.2 pts
49Crawford County6.9-1.3 pts
49Dunn County6.9-1.4 pts
51Kewaunee County6.8-1.2 pts
51Wood County6.8-0.9 pts
53Columbia County6.7-0.7 pts
53Eau Claire County6.7-2.5 pts
53Green County6.7-0.9 pts
53Iron County6.7-2.1 pts
53Lincoln County6.7-0.8 pts
58Portage County6.6-1.1 pts
58Sheboygan County6.6-0.4 pts
60Dodge County6.5-0.4 pts
61Pierce County6.40 pts
62Fond du Lac County6.3-0.6 pts
63Winnebago County6.2+0.1 pts
64Iowa County5.9-0.1 pts
64La Crosse County5.9-0.8 pts
64Outagamie County5.9-1.7 pts
67Dane County5.5+0.2 pts
68Washington County5.3+0.2 pts
69Calumet County4.8-0.7 pts
69St. Croix County4.8-1 pts
71Waukesha County4.6-0.3 pts
72Ozaukee County4.4-0.3 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-2021-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), 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-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), 2021. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties?period=2021. 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), 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties?period=2021.

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), 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_wisconsin_by_2021,
  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), 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2021-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties?period=2021. 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-2021-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), 2021
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-2021-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wisconsin-counties?period=2021.
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-2021-csv.zip. Retrieved 2026-10-12.
ER  -
Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Wisconsin by uninsured rate, ages 18 to 64 (US model-based estimate) using official data, and cite the source.
rank_places {"indicator":"uninsured_rate_18_64","level":"province","within":"Wisconsin","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=uninsured_rate_18_64&level=province&within=Wisconsin&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

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

Clark County, with 15.2% in 2021, 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 4.4% in 2021.

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