RANKING · 2020 CENSUS · 39 SHOWN OF 39

Highest Welsh population share, Washington counties · 2020

Washington counties ranked by the share of all residents who are Welsh ancestry (2023 American Community Survey). A concentration measure: Welsh residents as a percentage of total population. This list covers the 39 counties in Washington that qualify, ranked against each other statewide.

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RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPWELSH SHAREVS 2000

01Wahkiakum County, WAWA4,8733.4%–

02Ferry County, WAWA7,5171.9%–

03San Juan County, WAWA18,5771.7%–

04Klickitat County, WAWA24,3311.7%–

05Kittitas County, WAWA48,8031.6%–

06Douglas County, WAWA46,4731.4%–

07Lewis County, WAWA88,0621.3%–

08Jefferson County, WAWA33,9701.3%–

09Pend Oreille County, WAWA14,4571.3%–

10Skagit County, WAWA132,9751.3%–

11Island County, WAWA85,6571.3%–

12Clallam County, WAWA78,2021.2%–

13Kitsap County, WAWA283,3741.2%–

14Stevens County, WAWA49,6681.2%–

15Walla Walla County, WAWA62,3611.2%–

16Benton County, WAWA221,7221.2%–

17Spokane County, WAWA558,3441.1%–

18Okanogan County, WAWA45,2301.1%–

19Mason County, WAWA71,1651.0%–

20Snohomish County, WAWA870,6561.0%–

21Skamania County, WAWA12,6691.0%–

22Pacific County, WAWA24,3570.9%–

23Whatcom County, WAWA236,3920.9%–

24King County, WAWA2,344,9390.9%–

25Clark County, WAWA532,1190.9%–

26Cowlitz County, WAWA114,8850.9%–

27Whitman County, WAWA48,5120.9%–

28Pierce County, WAWA946,2880.8%–

29Lincoln County, WAWA11,9820.8%–

30Thurston County, WAWA304,2610.8%–

31Grays Harbor County, WAWA78,1440.7%–

32Asotin County, WAWA22,5450.7%–

33Chelan County, WAWA81,9410.6%–

34Franklin County, WAWA102,6120.5%–

35Grant County, WAWA105,7270.5%–

36Yakima County, WAWA259,1850.4%–

37Columbia County, WAWA4,1410.3%–

38Garfield County, WAWA2,4160.2%–

39Adams County, WAWA21,4880.2%–

SHOWING 1–39 OF 39

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