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

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

Fremont County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 23 counties in 2018, at 21.5%. Laramie County had the lowest, at 11.6%. The median was 14.8% and the figure for Wyoming was 14.7%. Source: the U.S. Census Bureau.

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Highest21.5Fremont County
Lowest11.6Laramie County
Median14.823 counties
Wyoming14.7History

Map of counties, 2018

Albany County: 13.9 %Big Horn County: 20 %Campbell County: 13.8 %Carbon County: 17.3 %Converse County: 13.4 %Crook County: 15.6 %Fremont County: 21.5 %Goshen County: 17.3 %Hot Springs County: 15.3 %Johnson County: 15 %Laramie County: 11.6 %Lincoln County: 14.4 %Natrona County: 15.9 %Niobrara County: 19.2 %Park County: 14.9 %Platte County: 14.3 %Sheridan County: 13.2 %Sublette County: 13.5 %Sweetwater County: 13.9 %Teton County: 14.8 %Uinta County: 14.5 %Washakie County: 17.8 %Weston County: 14.8 %
  • Under 14
  • 14 to 15
  • 15 to 17
  • 17 and over
%, 2018. 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.

All counties, 2018

Fremont County: 21.5 %Fremont County21.5Big Horn County: 20 %Big Horn County20Niobrara County: 19.2 %Niobrara County19.2Washakie County: 17.8 %Washakie County17.8Carbon County: 17.3 %Carbon County17.3Goshen County: 17.3 %Goshen County17.3Natrona County: 15.9 %Natrona County15.9Crook County: 15.6 %Crook County15.6Hot Springs County: 15.3 %Hot Springs County15.3Johnson County: 15 %Johnson County15Park County: 14.9 %Park County14.9Teton County: 14.8 %Teton County14.8Weston County: 14.8 %Weston County14.8Uinta County: 14.5 %Uinta County14.5Lincoln County: 14.4 %Lincoln County14.4Platte County: 14.3 %Platte County14.3Albany County: 13.9 %Albany County13.9Sweetwater County: 13.9 %Sweetwater County13.9Campbell County: 13.8 %Campbell County13.8Sublette County: 13.5 %Sublette County13.5Converse County: 13.4 %Converse County13.4Sheridan County: 13.2 %Sheridan County13.2Laramie County: 11.6 %Laramie County11.6Fremont County: 21.5 %Fremont County21.5Big Horn County: 20 %Big Horn County20Niobrara County: 19.2 %Niobrara County19.2Washakie County: 17.8 %Washakie County17.8Carbon County: 17.3 %Carbon County17.3Goshen County: 17.3 %Goshen County17.3Natrona County: 15.9 %Natrona County15.9Crook County: 15.6 %Crook County15.6Hot Springs County: 15.3 %Hot Springs County15.3Johnson County: 15 %Johnson County15Park County: 14.9 %Park County14.9Teton County: 14.8 %Teton County14.8Weston County: 14.8 %Weston County14.8Uinta County: 14.5 %Uinta County14.5Lincoln County: 14.4 %Lincoln County14.4Platte County: 14.3 %Platte County14.3Albany County: 13.9 %Albany County13.9Sweetwater County: 13.9 %Sweetwater County13.9Campbell County: 13.8 %Campbell County13.8Sublette County: 13.5 %Sublette County13.5Converse County: 13.4 %Converse County13.4Sheridan County: 13.2 %Sheridan County13.2Laramie County: 11.6 %Laramie County11.6
%. 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

RankCounties2018 (%)Change on 2017
1Fremont County21.5-1.3 pts
2Big Horn County20-2.5 pts
3Niobrara County19.2-2.1 pts
4Washakie County17.8-1.5 pts
5Carbon County17.3-1.8 pts
5Goshen County17.3-1.7 pts
7Natrona County15.9-1 pts
8Crook County15.6-0.3 pts
9Hot Springs County15.3-0.7 pts
10Johnson County15-2.2 pts
11Park County14.9-0.9 pts
12Teton County14.8-2.7 pts
12Weston County14.8-0.3 pts
14Uinta County14.5-2.1 pts
15Lincoln County14.4-1.2 pts
16Platte County14.3-2.6 pts
17Albany County13.90 pts
17Sweetwater County13.9-3 pts
19Campbell County13.8-1.5 pts
20Sublette County13.5-2.6 pts
21Converse County13.4-1.3 pts
22Sheridan County13.2-2.6 pts
23Laramie County11.6-2 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-2018-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 Wyoming by uninsured rate, ages 18 to 64 (US model-based estimate), 2018) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-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 Wyoming by uninsured rate, ages 18 to 64 (US model-based estimate), 2018. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wyoming-counties?period=2018. 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 Wyoming by uninsured rate, ages 18 to 64 (US model-based estimate), 2018. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wyoming-counties?period=2018.

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 Wyoming by uninsured rate, ages 18 to 64 (US model-based estimate), 2018 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/wyoming-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_wyoming_by_2018,
  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 Wyoming by uninsured rate, ages 18 to 64 (US model-based estimate), 2018}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2018-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wyoming-counties?period=2018. 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-2018-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 Wyoming by uninsured rate, ages 18 to 64 (US model-based estimate), 2018
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-2018-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/wyoming-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/wyoming-counties?period=2018.
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-2018-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)?

Fremont County, with 21.5% in 2018, according to the U.S. Census Bureau.

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

Laramie County, with 11.6% in 2018.

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 Wyoming: more rankings