Counties in Wyoming by uninsured rate, under 19 (US model-based estimate)

Big Horn County had the highest uninsured rate, under 19 (US model-based estimate) of 23 counties in 2018, at 10.8%. Laramie County had the lowest, at 5.1%. The median was 7.2% and the figure for Wyoming was 6.8%. Source: the U.S. Census Bureau.

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Highest10.8Big Horn County
Median7.223 counties
Wyoming6.8History

Map of counties, 2018

Albany County: 5.1 %Big Horn County: 10.8 %Campbell County: 6.9 %Carbon County: 8.2 %Converse County: 7 %Crook County: 9.5 %Fremont County: 9.4 %Goshen County: 8.8 %Hot Springs County: 6.2 %Johnson County: 6.8 %Laramie County: 5.1 %Lincoln County: 7.3 %Natrona County: 6.6 %Niobrara County: 10.3 %Park County: 7.2 %Platte County: 7.3 %Sheridan County: 5.7 %Sublette County: 7.9 %Sweetwater County: 6.1 %Teton County: 8.6 %Uinta County: 6.6 %Washakie County: 7.4 %Weston County: 7.2 %
  • Under 6.4
  • 6.4 to 7
  • 7 to 7.3
  • 7.3 to 8.7
  • 8.7 and over
%, 2018. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2018

Big Horn County: 10.8 %Big Horn County10.8Niobrara County: 10.3 %Niobrara County10.3Crook County: 9.5 %Crook County9.5Fremont County: 9.4 %Fremont County9.4Goshen County: 8.8 %Goshen County8.8Teton County: 8.6 %Teton County8.6Carbon County: 8.2 %Carbon County8.2Sublette County: 7.9 %Sublette County7.9Washakie County: 7.4 %Washakie County7.4Lincoln County: 7.3 %Lincoln County7.3Platte County: 7.3 %Platte County7.3Park County: 7.2 %Park County7.2Weston County: 7.2 %Weston County7.2Converse County: 7 %Converse County7Campbell County: 6.9 %Campbell County6.9Johnson County: 6.8 %Johnson County6.8Natrona County: 6.6 %Natrona County6.6Uinta County: 6.6 %Uinta County6.6Hot Springs County: 6.2 %Hot Springs County6.2Sweetwater County: 6.1 %Sweetwater County6.1Sheridan County: 5.7 %Sheridan County5.7Albany County: 5.1 %Albany County5.1Laramie County: 5.1 %Laramie County5.1Big Horn County: 10.8 %Big Horn County10.8Niobrara County: 10.3 %Niobrara County10.3Crook County: 9.5 %Crook County9.5Fremont County: 9.4 %Fremont County9.4Goshen County: 8.8 %Goshen County8.8Teton County: 8.6 %Teton County8.6Carbon County: 8.2 %Carbon County8.2Sublette County: 7.9 %Sublette County7.9Washakie County: 7.4 %Washakie County7.4Lincoln County: 7.3 %Lincoln County7.3Platte County: 7.3 %Platte County7.3Park County: 7.2 %Park County7.2Weston County: 7.2 %Weston County7.2Converse County: 7 %Converse County7Campbell County: 6.9 %Campbell County6.9Johnson County: 6.8 %Johnson County6.8Natrona County: 6.6 %Natrona County6.6Uinta County: 6.6 %Uinta County6.6Hot Springs County: 6.2 %Hot Springs County6.2Sweetwater County: 6.1 %Sweetwater County6.1Sheridan County: 5.7 %Sheridan County5.7Albany County: 5.1 %Albany County5.1Laramie County: 5.1 %Laramie County5.1
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2018 (%)Change on 2017
1Big Horn County10.8-3.5 pts
2Niobrara County10.3-2.8 pts
3Crook County9.5-2.7 pts
4Fremont County9.4-5.1 pts
5Goshen County8.8-1.4 pts
6Teton County8.6-2.5 pts
7Carbon County8.2-1.6 pts
8Sublette County7.9-3.2 pts
9Washakie County7.4-3.2 pts
10Lincoln County7.3-2.9 pts
10Platte County7.3-2.1 pts
12Park County7.2-2.3 pts
12Weston County7.2-1.7 pts
14Converse County7-1.4 pts
15Campbell County6.9-0.7 pts
16Johnson County6.8-2.9 pts
17Natrona County6.6-1.1 pts
17Uinta County6.6-1.5 pts
19Hot Springs County6.2-1 pts
20Sweetwater County6.1-2.9 pts
21Sheridan County5.7-1.5 pts
22Albany County5.1-2 pts
22Laramie County5.1-1.1 pts

Other periods

About this ranking

People under 19 without health insurance coverage of any kind, as a percentage of all people under 19. 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. Under 19 matches the age limit for children in Medicaid and the Children's Health Insurance Program (CHIP).

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, under 19, 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, under 19, all races, both sexes, all income levels, states and counties (Counties in Wyoming by uninsured rate, under 19 (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, under 19, all races, both sexes, all income levels, states and counties, Counties in Wyoming by uninsured rate, under 19 (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-under-19/wyoming-counties?period=2018. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties. Counties in Wyoming by uninsured rate, under 19 (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-under-19/wyoming-counties?period=2018.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, all races, both sexes, all income levels, states and counties, Counties in Wyoming by uninsured rate, under 19 (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-under-19/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, under 19, all races, both sexes, all income levels, states and counties: Counties in Wyoming by uninsured rate, under 19 (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-under-19/wyoming-counties?period=2018. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, 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, under 19, all races, both sexes, all income levels, states and counties: Counties in Wyoming by uninsured rate, under 19 (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-under-19/wyoming-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-19/wyoming-counties?period=2018.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 19, 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, under 19 (US model-based estimate)?

Big Horn County, with 10.8% in 2018, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, under 19 (US model-based estimate)?

Laramie County, with 5.1% 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, under 19, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, under 19 (US model-based estimate): other rankings

Counties in Wyoming: more rankings