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)

Yakima County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 39 counties in 2016, at 18.2%. Garfield County had the lowest, at 5.4%. The median was 9.3% and the figure for Washington was 8.4%. Source: the U.S. Census Bureau.

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Highest18.2Yakima County
Lowest5.4Garfield County
Median9.339 counties
Washington8.4History

Map of counties, 2016

Adams County: 18.1 %Asotin County: 8 %Benton County: 9.3 %Chelan County: 12.1 %Clallam County: 10.4 %Clark County: 8.1 %Columbia County: 8.1 %Cowlitz County: 8.9 %Douglas County: 12.6 %Ferry County: 12.9 %Franklin County: 16.6 %Garfield County: 5.4 %Grant County: 15.5 %Grays Harbor County: 9.5 %Island County: 7.4 %Jefferson County: 8.3 %King County: 6.8 %Kitsap County: 7.6 %Kittitas County: 9.1 %Klickitat County: 9.8 %Lewis County: 9.5 %Lincoln County: 7.9 %Mason County: 11.8 %Okanogan County: 16.9 %Pacific County: 11.1 %Pend Oreille County: 8.5 %Pierce County: 8.1 %San Juan County: 9.3 %Skagit County: 10.4 %Skamania County: 8 %Snohomish County: 7.8 %Spokane County: 7.8 %Stevens County: 9.3 %Thurston County: 6.7 %Wahkiakum County: 9.3 %Walla Walla County: 10.2 %Whatcom County: 10.2 %Whitman County: 7.3 %Yakima County: 18.2 %
  • Under 7.8
  • 7.8 to 8.1
  • 8.1 to 9.3
  • 9.3 to 10
  • 10 to 12
  • 12 and over
%, 2016. 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, 2016

Yakima County: 18.2 %Yakima County18.2Adams County: 18.1 %Adams County18.1Okanogan County: 16.9 %Okanogan County16.9Franklin County: 16.6 %Franklin County16.6Grant County: 15.5 %Grant County15.5Ferry County: 12.9 %Ferry County12.9Douglas County: 12.6 %Douglas County12.6Chelan County: 12.1 %Chelan County12.1Mason County: 11.8 %Mason County11.8Pacific County: 11.1 %Pacific County11.1Clallam County: 10.4 %Clallam County10.4Skagit County: 10.4 %Skagit County10.4Walla Walla County: 10.2 %Walla Walla County10.2Whatcom County: 10.2 %Whatcom County10.2Klickitat County: 9.8 %Klickitat County9.8Grays Harbor County: 9.5 %Grays Harbor County9.5Lewis County: 9.5 %Lewis County9.5Benton County: 9.3 %Benton County9.3San Juan County: 9.3 %San Juan County9.3Stevens County: 9.3 %Stevens County9.3Wahkiakum County: 9.3 %Wahkiakum County9.3Kittitas County: 9.1 %Kittitas County9.1Cowlitz County: 8.9 %Cowlitz County8.9Pend Oreille County: 8.5 %Pend Oreille County8.5Jefferson County: 8.3 %Jefferson County8.3Clark County: 8.1 %Clark County8.1Columbia County: 8.1 %Columbia County8.1Pierce County: 8.1 %Pierce County8.1Asotin County: 8 %Asotin County8Skamania County: 8 %Skamania County8Lincoln County: 7.9 %Lincoln County7.9Snohomish County: 7.8 %Snohomish County7.8Spokane County: 7.8 %Spokane County7.8Kitsap County: 7.6 %Kitsap County7.6Island County: 7.4 %Island County7.4Whitman County: 7.3 %Whitman County7.3King County: 6.8 %King County6.8Thurston County: 6.7 %Thurston County6.7Garfield County: 5.4 %Garfield County5.4Yakima County: 18.2 %Yakima County18.2Adams County: 18.1 %Adams County18.1Okanogan County: 16.9 %Okanogan County16.9Franklin County: 16.6 %Franklin County16.6Grant County: 15.5 %Grant County15.5Ferry County: 12.9 %Ferry County12.9Douglas County: 12.6 %Douglas County12.6Chelan County: 12.1 %Chelan County12.1Mason County: 11.8 %Mason County11.8Pacific County: 11.1 %Pacific County11.1Clallam County: 10.4 %Clallam County10.4Skagit County: 10.4 %Skagit County10.4Walla Walla County: 10.2 %Walla Walla County10.2Whatcom County: 10.2 %Whatcom County10.2Klickitat County: 9.8 %Klickitat County9.8Grays Harbor County: 9.5 %Grays Harbor County9.5Lewis County: 9.5 %Lewis County9.5Benton County: 9.3 %Benton County9.3San Juan County: 9.3 %San Juan County9.3Stevens County: 9.3 %Stevens County9.3Wahkiakum County: 9.3 %Wahkiakum County9.3Kittitas County: 9.1 %Kittitas County9.1Cowlitz County: 8.9 %Cowlitz County8.9Pend Oreille County: 8.5 %Pend Oreille County8.5Jefferson County: 8.3 %Jefferson County8.3Clark County: 8.1 %Clark County8.1Columbia County: 8.1 %Columbia County8.1Pierce County: 8.1 %Pierce County8.1Asotin County: 8 %Asotin County8Skamania County: 8 %Skamania County8Lincoln County: 7.9 %Lincoln County7.9Snohomish County: 7.8 %Snohomish County7.8Spokane County: 7.8 %Spokane County7.8Kitsap County: 7.6 %Kitsap County7.6Island County: 7.4 %Island County7.4Whitman County: 7.3 %Whitman County7.3King County: 6.8 %King County6.8Thurston County: 6.7 %Thurston County6.7Garfield County: 5.4 %Garfield County5.4
%. 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

RankCounties2016 (%)Change on 2015
1Yakima County18.2-2.7 pts
2Adams County18.1-2.2 pts
3Okanogan County16.9-1.1 pts
4Franklin County16.6-1.2 pts
5Grant County15.5-3.1 pts
6Ferry County12.9-0.9 pts
7Douglas County12.6-1.8 pts
8Chelan County12.1+0.1 pts
9Mason County11.8-1 pts
10Pacific County11.1-1 pts
11Clallam County10.4-0.9 pts
11Skagit County10.4-1.8 pts
13Walla Walla County10.2-1 pts
13Whatcom County10.2-0.5 pts
15Klickitat County9.8-1.6 pts
16Grays Harbor County9.5-3.1 pts
16Lewis County9.5-1.7 pts
18Benton County9.3-0.1 pts
18San Juan County9.3-2.2 pts
18Stevens County9.3-1 pts
18Wahkiakum County9.3-0.2 pts
22Kittitas County9.1-1.3 pts
23Cowlitz County8.9-1.1 pts
24Pend Oreille County8.5-0.5 pts
25Jefferson County8.3-0.1 pts
26Clark County8.1-0.7 pts
26Columbia County8.1-0.7 pts
26Pierce County8.1-1.1 pts
29Asotin County8-0.6 pts
29Skamania County8+0.1 pts
31Lincoln County7.9-0.3 pts
32Snohomish County7.8-0.8 pts
32Spokane County7.80 pts
34Kitsap County7.6+0.8 pts
35Island County7.4+0.1 pts
36Whitman County7.3+0.5 pts
37King County6.8-1 pts
38Thurston County6.7-1.3 pts
39Garfield County5.4-1.1 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-2016-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), 2016) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-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), 2016. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/washington-counties?period=2016. 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), 2016. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/washington-counties?period=2016.

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), 2016 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/washington-counties?period=2016 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_washington_by_2016,
  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), 2016}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2016-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/washington-counties?period=2016. 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-2016-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), 2016
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-2016-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/washington-counties?period=2016
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/washington-counties?period=2016.
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-2016-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)?

Yakima County, with 18.2% in 2016, according to the U.S. Census Bureau.

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

Garfield County, with 5.4% in 2016.

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