RANKING · 2020 CENSUS · 39 SHOWN OF 39

Highest Irish population share, Washington counties · 2020

Washington counties ranked by the share of all residents who are Irish ancestry (2023 American Community Survey). A concentration measure: Irish 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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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 SHAREVS 2000

01Ferry County, WAWA7,51715.7%–

02Jefferson County, WAWA33,97013.7%–

03Cowlitz County, WAWA114,88513.6%–

04Kitsap County, WAWA283,37413.6%–

05Spokane County, WAWA558,34413.3%–

06Klickitat County, WAWA24,33113.2%–

07San Juan County, WAWA18,57713.0%–

08Lewis County, WAWA88,06212.9%–

09Grays Harbor County, WAWA78,14412.7%–

10Island County, WAWA85,65712.7%–

11Thurston County, WAWA304,26112.3%–

12Mason County, WAWA71,16512.0%–

13Clallam County, WAWA78,20211.7%–

14Garfield County, WAWA2,41611.5%–

15Skamania County, WAWA12,66911.1%–

16Okanogan County, WAWA45,23011.0%–

17Stevens County, WAWA49,66810.9%–

18Pacific County, WAWA24,35710.8%–

19Clark County, WAWA532,11910.8%–

20Benton County, WAWA221,72210.5%–

21Skagit County, WAWA132,97510.4%–

22Pend Oreille County, WAWA14,45710.3%–

23Kittitas County, WAWA48,80310.3%–

24Pierce County, WAWA946,28810.2%–

25Asotin County, WAWA22,54510.2%–

26Douglas County, WAWA46,47310.2%–

27Snohomish County, WAWA870,6569.9%–

28Walla Walla County, WAWA62,3619.7%–

29Whatcom County, WAWA236,3929.3%–

30Columbia County, WAWA4,1419.2%–

31Wahkiakum County, WAWA4,8739.1%–

32King County, WAWA2,344,9398.9%–

33Whitman County, WAWA48,5128.8%–

34Chelan County, WAWA81,9418.4%–

35Lincoln County, WAWA11,9828.3%–

36Grant County, WAWA105,7275.9%–

37Franklin County, WAWA102,6125.7%–

38Yakima County, WAWA259,1855.4%–

39Adams County, WAWA21,4884.0%–

SHOWING 1–39 OF 39

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