RANKING · 2020 CENSUS · 39 SHOWN OF 39

Most racially diverse, Washington counties · 2020

Washington counties ranked by the CensusEasy Diversity Score (0 to 100), the chance two random residents are of a different race or ethnicity (2023 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

RELATEDOldest by median age Youngest by median age Most foreign-born residents Highest uninsured rate Most women Most men

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS 2000

01King County, WAWA2,344,93979+66%

02Yakima County, WAWA259,18571+15%

03Pierce County, WAWA946,28870+74%

04Franklin County, WAWA102,61269+2%

05Grant County, WAWA105,72768+21%

06Snohomish County, WAWA870,65667+134%

07Okanogan County, WAWA45,23065+81%

08Douglas County, WAWA46,47364+54%

09Benton County, WAWA221,72261+75%

10Adams County, WAWA21,48859−6%

11Chelan County, WAWA81,94159+42%

12Walla Walla County, WAWA62,36157+45%

13Thurston County, WAWA304,26157+109%

14Kitsap County, WAWA283,37454+94%

15Skagit County, WAWA132,97554+79%

16Clark County, WAWA532,11953+128%

17Whitman County, WAWA48,51252+115%

18Ferry County, WAWA7,51751+405%

19Whatcom County, WAWA236,39249+132%

20Mason County, WAWA71,16548+174%

21Island County, WAWA85,65747+87%

22Grays Harbor County, WAWA78,14446+186%

23Kittitas County, WAWA48,80343+127%

24Pacific County, WAWA24,35742+133%

25Cowlitz County, WAWA114,88541+162%

26Klickitat County, WAWA24,33140+90%

27Lewis County, WAWA88,06239+152%

28Clallam County, WAWA78,20239+184%

29Spokane County, WAWA558,34439+152%

30Stevens County, WAWA49,66831+344%

31Columbia County, WAWA4,14130+78%

32Jefferson County, WAWA33,97030+218%

33Skamania County, WAWA12,66929+140%

34San Juan County, WAWA18,57728+218%

35Pend Oreille County, WAWA14,45728+287%

36Garfield County, WAWA2,41625+295%

37Asotin County, WAWA22,54524+264%

38Wahkiakum County, WAWA4,87323+180%

39Lincoln County, WAWA11,98221+257%

SHOWING 1–39 OF 39

Download CSV (full list, 39 rows)How this score is calculated

UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES