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Washington Counties by Uninsured Rate

The uninsured rate is the share of the population with no health insurance coverage — influenced heavily by Medicaid eligibility and employer coverage.

All 39 counties ranked by Uninsured Rate, from lowest to highest. Click the column header to reverse sort order. Data from the U.S. Census Bureau, ACS 5-Year Estimates, 2023.

States Counties Cities Metros ZIPs
# Counties Uninsured Rate ↑
1 Asotin County, Washington 0.0%
2 Okanogan County, Washington 0.0%
3 Jefferson County, Washington 0.0%
4 King County, Washington 0.8%
5 Snohomish County, Washington 0.8%
6 Douglas County, Washington 1.1%
7 Whitman County, Washington 1.4%
8 Benton County, Washington 1.6%
9 Stevens County, Washington 1.8%
10 Franklin County, Washington 2.0%
11 Mason County, Washington 2.1%
12 Island County, Washington 2.3%
13 Skamania County, Washington 2.4%
14 Adams County, Washington 2.5%
15 Pend Oreille County, Washington 2.8%
16 Lincoln County, Washington 3.1%
17 Whatcom County, Washington 3.2%
18 Kitsap County, Washington 3.2%
19 Columbia County, Washington 3.2%
20 Skagit County, Washington 3.3%
21 Kittitas County, Washington 3.3%
22 Grays Harbor County, Washington 3.7%
23 Cowlitz County, Washington 3.8%
24 Chelan County, Washington 4.1%
25 Clark County, Washington 4.5%
26 Ferry County, Washington 4.8%
27 Thurston County, Washington 5.0%
28 Klickitat County, Washington 5.4%
29 Wahkiakum County, Washington 5.6%
30 Garfield County, Washington 5.9%
31 Pacific County, Washington 6.0%
32 Pierce County, Washington 6.1%
33 Clallam County, Washington 6.5%
34 San Juan County, Washington 6.8%
35 Lewis County, Washington 7.1%
36 Walla Walla County, Washington 8.0%
37 Spokane County, Washington 8.9%
38 Yakima County, Washington 13.0%
39 Grant County, Washington 13.3%