RANKING · 2020 CENSUS · 36 SHOWN OF 36

Most segregated, Washington counties · 2020

Washington counties ranked by the CensusEasy Segregation Score, the White vs non-White index of dissimilarity across census tracts (2020 ACS). Higher means residents are more sorted into separate neighborhoods. This list covers the 36 counties in Washington that qualify, ranked against each other statewide. The median across all 36 is 26.

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

RANKPLACESTATEPOPSEGREGATION SCOREVS –

01Ferry County, WAWA7,51749–

02Yakima County, WAWA259,18548–

03Adams County, WAWA21,48843–

04Grant County, WAWA105,72740–

05Okanogan County, WAWA45,23038–

06Stevens County, WAWA49,66837–

07Franklin County, WAWA102,61237–

08Island County, WAWA85,65737–

09Chelan County, WAWA81,94132–

10Clallam County, WAWA78,20232–

11Skagit County, WAWA132,97531–

12Pierce County, WAWA946,28831–

13King County, WAWA2,344,93931–

14Benton County, WAWA221,72228–

15Klickitat County, WAWA24,33127–

16Snohomish County, WAWA870,65627–

17Asotin County, WAWA22,54527–

18Grays Harbor County, WAWA78,14426–

19Clark County, WAWA532,11926–

20Whitman County, WAWA48,51226–

21Walla Walla County, WAWA62,36126–

22Mason County, WAWA71,16525–

23Spokane County, WAWA558,34425–

24Kitsap County, WAWA283,37424–

25Douglas County, WAWA46,47323–

26Whatcom County, WAWA236,39223–

27Cowlitz County, WAWA114,88523–

28Thurston County, WAWA304,26121–

29Pacific County, WAWA24,35720–

30Jefferson County, WAWA33,97018–

31Lincoln County, WAWA11,98218–

32Kittitas County, WAWA48,80317–

33Pend Oreille County, WAWA14,45717–

34Lewis County, WAWA88,06215–

35Skamania County, WAWA12,66913–

36San Juan County, WAWA18,57713–

SHOWING 1–36 OF 36

Download CSV (full list, 36 rows)How this score is calculated

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS