RANKING · 2020 CENSUS · 39 SHOWN OF 39

Largest Scotch-Irish population, Washington counties · 2020

Washington counties ranked by the number of residents who are Scotch-Irish ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 39 counties in Washington that qualify, ranked against each other statewide.

Scotch-Irish Americans: full group profile →

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SAME RANKING BYCities States Metros

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

YEAR2010 2020 2024

RANKPLACESTATEPOPSCOTCH-IRISH POPULATIONVS 2010

01King County, WAWA2,344,93923,836−44%

02Snohomish County, WAWA870,65610,110−46%

03Pierce County, WAWA946,2887,705−58%

04Spokane County, WAWA558,3446,923−43%

05Clark County, WAWA532,1196,216−46%

06Kitsap County, WAWA283,3744,057−49%

07Thurston County, WAWA304,2613,288−49%

08Whatcom County, WAWA236,3923,004−47%

09Benton County, WAWA221,7222,268−26%

10Skagit County, WAWA132,9751,845−29%

11Yakima County, WAWA259,1851,827−43%

12Mason County, WAWA71,1651,230−26%

13Cowlitz County, WAWA114,8851,172−61%

14Island County, WAWA85,6571,119−44%

15Clallam County, WAWA78,2021,066−55%

16Lewis County, WAWA88,062930−61%

17Chelan County, WAWA81,941859−41%

18Walla Walla County, WAWA62,361834−34%

19Grays Harbor County, WAWA78,144715−61%

20Stevens County, WAWA49,668631−49%

21Grant County, WAWA105,727581−64%

22Kittitas County, WAWA48,803526−53%

23Jefferson County, WAWA33,970485−63%

24Okanogan County, WAWA45,230480−62%

25Klickitat County, WAWA24,331404−33%

26Franklin County, WAWA102,612390−61%

27Whitman County, WAWA48,512390−64%

28Pacific County, WAWA24,357321−50%

29San Juan County, WAWA18,577320−33%

30Douglas County, WAWA46,473246−77%

31Pend Oreille County, WAWA14,457186−48%

32Ferry County, WAWA7,517140−49%

33Asotin County, WAWA22,545119−75%

34Adams County, WAWA21,488111−35%

35Lincoln County, WAWA11,98277−86%

36Skamania County, WAWA12,66977−67%

37Wahkiakum County, WAWA4,87377−37%

38Columbia County, WAWA4,14159−45%

39Garfield County, WAWA2,41626−64%

SHOWING 1–39 OF 39

Download CSV (full list, 39 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS