RANKING · 2020 CENSUS · 39 SHOWN OF 39

Highest Medicaid coverage, Washington counties · 2020

Washington counties ranked by the share of people covered by Medicaid or other means-tested public insurance, alone or in combination with other coverage (2020 ACS). This list covers the 39 counties in Washington that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

RANKPLACESTATEPOPMEDICAIDVS –

01Adams County, WAWA21,48837.6%–

02Yakima County, WAWA259,18536.5%–

03Ferry County, WAWA7,51735.9%–

04Okanogan County, WAWA45,23035.4%–

05Grant County, WAWA105,72734.2%–

06Franklin County, WAWA102,61232.4%–

07Stevens County, WAWA49,66829.8%–

08Cowlitz County, WAWA114,88528.8%–

09Douglas County, WAWA46,47328.3%–

10Pacific County, WAWA24,35728.0%–

11Mason County, WAWA71,16527.8%–

12Lewis County, WAWA88,06226.9%–

13Chelan County, WAWA81,94126.9%–

14Grays Harbor County, WAWA78,14426.5%–

15Pend Oreille County, WAWA14,45726.4%–

16Klickitat County, WAWA24,33126.2%–

17Spokane County, WAWA558,34425.5%–

18Asotin County, WAWA22,54525.3%–

19Clallam County, WAWA78,20224.6%–

20Wahkiakum County, WAWA4,87324.4%–

21Benton County, WAWA221,72224.1%–

22Walla Walla County, WAWA62,36124.0%–

23Skamania County, WAWA12,66922.8%–

24Lincoln County, WAWA11,98222.4%–

25Columbia County, WAWA4,14122.0%–

26Skagit County, WAWA132,97521.8%–

27Pierce County, WAWA946,28820.6%–

28Whatcom County, WAWA236,39220.5%–

29Kittitas County, WAWA48,80320.4%–

30Clark County, WAWA532,11920.1%–

31Thurston County, WAWA304,26118.9%–

32Jefferson County, WAWA33,97018.6%–

33Kitsap County, WAWA283,37417.2%–

34Snohomish County, WAWA870,65616.3%–

35Whitman County, WAWA48,51215.7%–

36Garfield County, WAWA2,41615.5%–

37Island County, WAWA85,65714.9%–

38King County, WAWA2,344,93914.9%–

39San Juan County, WAWA18,57714.4%–

SHOWING 1–39 OF 39

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS