RANKING · 2010 CENSUS · 39 SHOWN OF 39

Fastest shrinking, Washington counties · 2010

Washington counties with the steepest population decline since the prior decennial census. This list covers the 39 counties in Washington that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Garfield County, WAWA2,416-5.5%−182%

02Pacific County, WAWA24,357-0.3%−103%

03Columbia County, WAWA4,141+0.3%−65%

04Lincoln County, WAWA11,982+3.8%−75%

05Okanogan County, WAWA45,230+3.9%−79%

06Ferry County, WAWA7,517+4.0%−74%

07Wahkiakum County, WAWA4,873+4.0%−73%

08Asotin County, WAWA22,545+5.2%−69%

09Klickitat County, WAWA24,331+6.0%−61%

10Walla Walla County, WAWA62,361+6.5%−53%

11Kitsap County, WAWA283,374+8.3%−63%

12Grays Harbor County, WAWA78,144+8.3%+77%

13Stevens County, WAWA49,668+8.6%−71%

14Chelan County, WAWA81,941+8.8%−68%

15Yakima County, WAWA259,185+9.3%−48%

16Island County, WAWA85,657+9.7%−49%

17Whitman County, WAWA48,512+9.9%+95%

18Lewis County, WAWA88,062+10.0%−36%

19Cowlitz County, WAWA114,885+10.2%−23%

20Clallam County, WAWA78,202+10.7%−25%

21Pend Oreille County, WAWA14,457+10.8%−66%

22King County, WAWA2,344,939+11.2%−27%

23San Juan County, WAWA18,577+12.0%−70%

24Skamania County, WAWA12,669+12.1%−37%

25Spokane County, WAWA558,344+12.7%−19%

26Pierce County, WAWA946,288+13.5%−31%

27Skagit County, WAWA132,975+13.5%−54%

28Adams County, WAWA21,488+14.0%−33%

29Jefferson County, WAWA33,970+15.1%−48%

30Snohomish County, WAWA870,656+17.7%−41%

31Douglas County, WAWA46,473+17.9%−27%

32Grant County, WAWA105,727+19.3%−47%

33Whatcom County, WAWA236,392+20.6%−33%

34Thurston County, WAWA304,261+21.7%−24%

35Kittitas County, WAWA48,803+22.6%−9%

36Mason County, WAWA71,165+22.9%−21%

37Benton County, WAWA221,722+23.0%−14%

38Clark County, WAWA532,119+23.2%−48%

39Franklin County, WAWA102,612+58.4%+84%

SHOWING 1–39 OF 39

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