RANKING · 1990 CENSUS · 39 SHOWN OF 39

Least educated, Washington counties · 1990

Washington counties with the smallest share of adults 25+ holding a bachelor's degree or higher (1990 ACS). This list covers the 39 counties in Washington that qualify, ranked against each other statewide. The median across all 39 is 15.1%.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPBACHELOR'S DEGREE OR HIGHERVS –

01Wahkiakum County, WAWA4,87310.4%–

02Klickitat County, WAWA24,33110.9%–

03Grays Harbor County, WAWA78,14411.0%–

04Cowlitz County, WAWA114,88511.3%–

05Pacific County, WAWA24,35711.3%–

06Skamania County, WAWA12,66911.7%–

07Lewis County, WAWA88,06211.8%–

08Grant County, WAWA105,72711.9%–

09Pend Oreille County, WAWA14,45712.0%–

10Ferry County, WAWA7,51712.0%–

11Okanogan County, WAWA45,23012.0%–

12Stevens County, WAWA49,66812.1%–

13Adams County, WAWA21,48812.3%–

14Asotin County, WAWA22,54512.4%–

15Franklin County, WAWA102,61213.4%–

16Mason County, WAWA71,16513.6%–

17Yakima County, WAWA259,18513.7%–

18Garfield County, WAWA2,41613.7%–

19Douglas County, WAWA46,47313.8%–

20Columbia County, WAWA4,14115.1%–

21Lincoln County, WAWA11,98216.0%–

22Clallam County, WAWA78,20216.1%–

23Skagit County, WAWA132,97516.3%–

24Chelan County, WAWA81,94116.7%–

25Clark County, WAWA532,11916.8%–

26Pierce County, WAWA946,28817.5%–

27Walla Walla County, WAWA62,36118.8%–

28Snohomish County, WAWA870,65619.3%–

29Kitsap County, WAWA283,37419.8%–

30Island County, WAWA85,65720.0%–

31Spokane County, WAWA558,34420.6%–

32Jefferson County, WAWA33,97021.8%–

33Whatcom County, WAWA236,39222.0%–

34Kittitas County, WAWA48,80322.2%–

35Benton County, WAWA221,72223.3%–

36Thurston County, WAWA304,26124.7%–

37King County, WAWA2,344,93932.8%–

38San Juan County, WAWA18,57733.5%–

39Whitman County, WAWA48,51242.6%–

SHOWING 1–39 OF 39

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