CensusEasy
RANKING · 1990 CENSUS · 39 SHOWN OF 39

Most racially diverse, Washington counties · 1990

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.

Flip the list · Least racially diverse, US counties
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SAME RANKING BYCitiesStatesMetrosZIP codes
RELATEDOldest by median ageYoungest by median ageMost foreign-born residentsHighest uninsured rateMost womenMost men
YEAR19902000201020202024
Most racially diverse by state
RANKPLACESTATEPOPDIVERSITY SCOREVS 2000
01Adams County, WAWA21,48878+24%
02Franklin County, WAWA102,61276+13%
03Yakima County, WAWA259,18571+15%
04Grant County, WAWA105,72753−6%
05Okanogan County, WAWA45,23049+35%
06Ferry County, WAWA7,51742+313%
07Walla Walla County, WAWA62,36140+2%
08Pierce County, WAWA946,28839−4%
09King County, WAWA2,344,93938−20%
10Douglas County, WAWA46,47336−13%
11Benton County, WAWA221,72234−3%
12Chelan County, WAWA81,94133−20%
13Columbia County, WAWA4,14131+86%
14Klickitat County, WAWA24,33129+39%
15Kitsap County, WAWA283,37429+5%
16Skagit County, WAWA132,97526−13%
17Island County, WAWA85,65726+4%
18Thurston County, WAWA304,26124−12%
19Whitman County, WAWA48,51222−8%
20Pacific County, WAWA24,35721+19%
21Whatcom County, WAWA236,39221−2%
22Stevens County, WAWA49,66821+200%
23Mason County, WAWA71,16521+18%
24Clallam County, WAWA78,20220+46%
25Snohomish County, WAWA870,65620−31%
26Grays Harbor County, WAWA78,14419+15%
27Clark County, WAWA532,11918−23%
28Wahkiakum County, WAWA4,87317+105%
29Kittitas County, WAWA48,80317−12%
30Spokane County, WAWA558,34416+4%
31Cowlitz County, WAWA114,88516+2%
32Skamania County, WAWA12,66914+14%
33Jefferson County, WAWA33,97014+46%
34Lewis County, WAWA88,06212−24%
35Asotin County, WAWA22,5459+35%
37San Juan County, WAWA18,5778−10%
38Lincoln County, WAWA11,9828+28%
39Garfield County, WAWA2,4162−67%
SHOWING 1–39 OF 39
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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES