RANKING · 2020 CENSUS · 39 SHOWN OF 39

Largest Irish population, Washington counties · 2020

Washington counties ranked by the number of residents who are 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.

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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

RANKPLACESTATEPOPIRISH POPULATIONVS 2010

01King County, WAWA2,344,939197,972−5%

02Pierce County, WAWA946,28891,347−11%

03Snohomish County, WAWA870,65680,088−8%

04Spokane County, WAWA558,34468,404−4%

05Clark County, WAWA532,11951,853−5%

06Kitsap County, WAWA283,37436,471+2%

07Thurston County, WAWA304,26135,008+9%

08Benton County, WAWA221,72221,016+0%

09Whatcom County, WAWA236,39220,986−17%

10Cowlitz County, WAWA114,88514,771−3%

11Yakima County, WAWA259,18513,557−22%

12Skagit County, WAWA132,97513,242+1%

13Island County, WAWA85,65710,652−5%

14Lewis County, WAWA88,06210,242−8%

15Grays Harbor County, WAWA78,1449,396−4%

16Clallam County, WAWA78,2028,954+0%

17Mason County, WAWA71,1657,815−2%

18Chelan County, WAWA81,9416,418+8%

19Walla Walla County, WAWA62,3615,869−20%

20Grant County, WAWA105,7275,724−6%

21Franklin County, WAWA102,6125,346+15%

22Stevens County, WAWA49,6684,943−19%

23Kittitas County, WAWA48,8034,830−21%

24Okanogan County, WAWA45,2304,642−7%

25Jefferson County, WAWA33,9704,373+6%

26Whitman County, WAWA48,5124,362−25%

27Douglas County, WAWA46,4734,318+23%

28Klickitat County, WAWA24,3312,916+14%

29Pacific County, WAWA24,3572,395−5%

30Asotin County, WAWA22,5452,299−27%

31San Juan County, WAWA18,5772,209+1%

32Pend Oreille County, WAWA14,4571,398−32%

33Skamania County, WAWA12,6691,322−22%

34Ferry County, WAWA7,5171,198+30%

35Lincoln County, WAWA11,982887−42%

36Adams County, WAWA21,488779−36%

37Wahkiakum County, WAWA4,873393+45%

38Columbia County, WAWA4,141370−24%

39Garfield County, WAWA2,416259−42%

SHOWING 1–39 OF 39

Download CSV (full list, 39 rows)

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