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

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

Okanogan County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 39 counties in 2022, at 20.3%. King County had the lowest, at 6.7%. The median was 9.7% and the figure for Washington was 8.8%. Source: the U.S. Census Bureau.

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Highest20.3Okanogan County
Lowest6.7King County
Median9.739 counties
Washington8.8History

Map of counties, 2022

Adams County: 18.7 %Asotin County: 8.2 %Benton County: 10.7 %Chelan County: 16.1 %Clallam County: 11 %Clark County: 8.3 %Columbia County: 9 %Cowlitz County: 9.2 %Douglas County: 16.5 %Ferry County: 10.6 %Franklin County: 18.3 %Garfield County: 8.6 %Grant County: 17.4 %Grays Harbor County: 12.2 %Island County: 7.9 %Jefferson County: 9 %King County: 6.7 %Kitsap County: 8.6 %Kittitas County: 9.7 %Klickitat County: 11.6 %Lewis County: 11.2 %Lincoln County: 9.7 %Mason County: 13 %Okanogan County: 20.3 %Pacific County: 11.8 %Pend Oreille County: 9.4 %Pierce County: 8 %San Juan County: 11.2 %Skagit County: 10.4 %Skamania County: 7.9 %Snohomish County: 8.2 %Spokane County: 7.6 %Stevens County: 9.6 %Thurston County: 8.2 %Wahkiakum County: 11 %Walla Walla County: 10.6 %Whatcom County: 9.3 %Whitman County: 7.7 %Yakima County: 18.9 %
  • Under 8.2
  • 8.2 to 9
  • 9 to 9.7
  • 9.7 to 11
  • 11 to 15
  • 15 and over
%, 2022. 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, 2022

Okanogan County: 20.3 %Okanogan County20.3Yakima County: 18.9 %Yakima County18.9Adams County: 18.7 %Adams County18.7Franklin County: 18.3 %Franklin County18.3Grant County: 17.4 %Grant County17.4Douglas County: 16.5 %Douglas County16.5Chelan County: 16.1 %Chelan County16.1Mason County: 13 %Mason County13Grays Harbor County: 12.2 %Grays Harbor County12.2Pacific County: 11.8 %Pacific County11.8Klickitat County: 11.6 %Klickitat County11.6Lewis County: 11.2 %Lewis County11.2San Juan County: 11.2 %San Juan County11.2Clallam County: 11 %Clallam County11Wahkiakum County: 11 %Wahkiakum County11Benton County: 10.7 %Benton County10.7Ferry County: 10.6 %Ferry County10.6Walla Walla County: 10.6 %Walla Walla County10.6Skagit County: 10.4 %Skagit County10.4Kittitas County: 9.7 %Kittitas County9.7Lincoln County: 9.7 %Lincoln County9.7Stevens County: 9.6 %Stevens County9.6Pend Oreille County: 9.4 %Pend Oreille County9.4Whatcom County: 9.3 %Whatcom County9.3Cowlitz County: 9.2 %Cowlitz County9.2Columbia County: 9 %Columbia County9Jefferson County: 9 %Jefferson County9Garfield County: 8.6 %Garfield County8.6Kitsap County: 8.6 %Kitsap County8.6Clark County: 8.3 %Clark County8.3Asotin County: 8.2 %Asotin County8.2Snohomish County: 8.2 %Snohomish County8.2Thurston County: 8.2 %Thurston County8.2Pierce County: 8 %Pierce County8Island County: 7.9 %Island County7.9Skamania County: 7.9 %Skamania County7.9Whitman County: 7.7 %Whitman County7.7Spokane County: 7.6 %Spokane County7.6King County: 6.7 %King County6.7Okanogan County: 20.3 %Okanogan County20.3Yakima County: 18.9 %Yakima County18.9Adams County: 18.7 %Adams County18.7Franklin County: 18.3 %Franklin County18.3Grant County: 17.4 %Grant County17.4Douglas County: 16.5 %Douglas County16.5Chelan County: 16.1 %Chelan County16.1Mason County: 13 %Mason County13Grays Harbor County: 12.2 %Grays Harbor County12.2Pacific County: 11.8 %Pacific County11.8Klickitat County: 11.6 %Klickitat County11.6Lewis County: 11.2 %Lewis County11.2San Juan County: 11.2 %San Juan County11.2Clallam County: 11 %Clallam County11Wahkiakum County: 11 %Wahkiakum County11Benton County: 10.7 %Benton County10.7Ferry County: 10.6 %Ferry County10.6Walla Walla County: 10.6 %Walla Walla County10.6Skagit County: 10.4 %Skagit County10.4Kittitas County: 9.7 %Kittitas County9.7Lincoln County: 9.7 %Lincoln County9.7Stevens County: 9.6 %Stevens County9.6Pend Oreille County: 9.4 %Pend Oreille County9.4Whatcom County: 9.3 %Whatcom County9.3Cowlitz County: 9.2 %Cowlitz County9.2Columbia County: 9 %Columbia County9Jefferson County: 9 %Jefferson County9Garfield County: 8.6 %Garfield County8.6Kitsap County: 8.6 %Kitsap County8.6Clark County: 8.3 %Clark County8.3Asotin County: 8.2 %Asotin County8.2Snohomish County: 8.2 %Snohomish County8.2Thurston County: 8.2 %Thurston County8.2Pierce County: 8 %Pierce County8Island County: 7.9 %Island County7.9Skamania County: 7.9 %Skamania County7.9Whitman County: 7.7 %Whitman County7.7Spokane County: 7.6 %Spokane County7.6King County: 6.7 %King County6.7
%. 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

RankCounties2022 (%)Change on 2021
1Okanogan County20.3+2.3 pts
2Yakima County18.9-1.6 pts
3Adams County18.7-4.6 pts
4Franklin County18.3+1.3 pts
5Grant County17.4-1.1 pts
6Douglas County16.5+0.2 pts
7Chelan County16.1+1.2 pts
8Mason County13-0.1 pts
9Grays Harbor County12.2+1.2 pts
10Pacific County11.8-0.5 pts
11Klickitat County11.6-1.2 pts
12Lewis County11.2-0.2 pts
12San Juan County11.2-1.1 pts
14Clallam County11-0.9 pts
14Wahkiakum County11-0.9 pts
16Benton County10.7-0.3 pts
17Ferry County10.6-0.7 pts
17Walla Walla County10.6-0.3 pts
19Skagit County10.4-0.3 pts
20Kittitas County9.7-0.1 pts
20Lincoln County9.7+0.9 pts
22Stevens County9.6-0.5 pts
23Pend Oreille County9.4-0.2 pts
24Whatcom County9.3-0.2 pts
25Cowlitz County9.2-1 pts
26Columbia County9-1.6 pts
26Jefferson County9+0.3 pts
28Garfield County8.6-0.4 pts
28Kitsap County8.6+0.6 pts
30Clark County8.3-1.5 pts
31Asotin County8.2-2.3 pts
31Snohomish County8.2-0.4 pts
31Thurston County8.2-0.1 pts
34Pierce County8-0.7 pts
35Island County7.9+0.2 pts
35Skamania County7.9-0.9 pts
37Whitman County7.7-0.7 pts
38Spokane County7.60 pts
39King County6.7-0.4 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-2022-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 Washington by uninsured rate, ages 18 to 64 (US model-based estimate), 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-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 Washington by uninsured rate, ages 18 to 64 (US model-based estimate), 2022. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/washington-counties?period=2022. 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 Washington by uninsured rate, ages 18 to 64 (US model-based estimate), 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/washington-counties?period=2022.

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 Washington by uninsured rate, ages 18 to 64 (US model-based estimate), 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/washington-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_washington_by_2022,
  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 Washington by uninsured rate, ages 18 to 64 (US model-based estimate), 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2022-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/washington-counties?period=2022. 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-2022-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 Washington by uninsured rate, ages 18 to 64 (US model-based estimate), 2022
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-2022-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/washington-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/washington-counties?period=2022.
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-2022-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)?

Okanogan County, with 20.3% in 2022, according to the U.S. Census Bureau.

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

King County, with 6.7% in 2022.

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 Washington: more rankings