RANKING · 2020 CENSUS · 39 SHOWN OF 39

Fastest shrinking, Washington counties · 2020

Washington counties with the steepest population decline from the 2010 census to 2020. This list covers the 39 counties in Washington that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Ferry County, WAWA7,517-4.9%−20.3 pts

02Columbia County, WAWA4,141-3.1%−4.1 pts

03Garfield County, WAWA2,416+0.9%−5.7 pts

04Okanogan County, WAWA45,230+2.4%−16.2 pts

05Lincoln County, WAWA11,982+2.9%−12.0 pts

06Asotin County, WAWA22,545+3.1%−13.7 pts

07Pend Oreille County, WAWA14,457+3.1%−28.5 pts

08Grays Harbor County, WAWA78,144+3.9%−0.8 pts

09Yakima County, WAWA259,185+5.5%−12.3 pts

10Walla Walla County, WAWA62,361+6.5%−7.4 pts

11Stevens County, WAWA49,668+6.7%−22.8 pts

12Whitman County, WAWA48,512+7.1%+2.1 pts

13Clallam County, WAWA78,202+8.1%−6.2 pts

14Cowlitz County, WAWA114,885+8.1%−5.1 pts

15Mason County, WAWA71,165+8.3%−20.6 pts

16Kittitas County, WAWA48,803+8.4%−16.5 pts

17Skamania County, WAWA12,669+8.8%−10.3 pts

18Lewis County, WAWA88,062+8.9%−6.7 pts

19Chelan County, WAWA81,941+9.1%−18.4 pts

20Kitsap County, WAWA283,374+9.7%−12.5 pts

21Adams County, WAWA21,488+10.1%−10.7 pts

22Jefferson County, WAWA33,970+10.4%−18.4 pts

23Island County, WAWA85,657+10.6%−8.2 pts

24Skagit County, WAWA132,975+10.8%−18.6 pts

25Wahkiakum County, WAWA4,873+11.2%−3.8 pts

26Grant County, WAWA105,727+11.2%−25.2 pts

27Pacific County, WAWA24,357+11.7%+0.6 pts

28Douglas County, WAWA46,473+11.7%−12.7 pts

29Klickitat County, WAWA24,331+11.9%−3.4 pts

30Whatcom County, WAWA236,392+12.8%−17.8 pts

31San Juan County, WAWA18,577+12.8%−27.5 pts

32Spokane County, WAWA558,344+14.5%−1.2 pts

33Pierce County, WAWA946,288+15.8%−3.7 pts

34Snohomish County, WAWA870,656+16.1%−14.1 pts

35Thurston County, WAWA304,261+16.9%−11.7 pts

36King County, WAWA2,344,939+17.5%+2.3 pts

37Benton County, WAWA221,722+18.1%−8.5 pts

38Clark County, WAWA532,119+18.3%−26.7 pts

39Franklin County, WAWA102,612+23.8%−7.9 pts

SHOWING 1–39 OF 39

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