RANKING · 2010 CENSUS · 31 SHOWN OF 31

Highest South American population share, Washington counties · 2010

Washington counties ranked by the share of all residents who are South American origin (2023 American Community Survey). A concentration measure: South American residents as a percentage of total population. This list covers the 31 counties in Washington that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest Mexican population Highest Mexican population share Largest Puerto Rican population Highest Puerto Rican population share Largest Cuban population Highest Cuban population share

YEAR2010 2020 2024

RANKPLACESTATEPOPSOUTH AMERICAN SHAREVS 2000

01San Juan County, WAWA18,5770.5%–

02King County, WAWA2,344,9390.5%–

03Whitman County, WAWA48,5120.5%–

04Adams County, WAWA21,4880.4%–

05Snohomish County, WAWA870,6560.4%–

06Stevens County, WAWA49,6680.3%–

07Pierce County, WAWA946,2880.3%–

08Benton County, WAWA221,7220.3%–

09Thurston County, WAWA304,2610.2%–

10Cowlitz County, WAWA114,8850.2%–

11Island County, WAWA85,6570.2%–

12Clark County, WAWA532,1190.2%–

13Whatcom County, WAWA236,3920.2%–

14Asotin County, WAWA22,5450.2%–

15Klickitat County, WAWA24,3310.2%–

16Clallam County, WAWA78,2020.2%–

17Chelan County, WAWA81,9410.2%–

18Skagit County, WAWA132,9750.2%–

19Yakima County, WAWA259,1850.1%–

20Spokane County, WAWA558,3440.1%–

21Mason County, WAWA71,1650.1%–

22Kitsap County, WAWA283,3740.1%–

23Franklin County, WAWA102,6120.1%–

24Walla Walla County, WAWA62,3610.1%–

25Jefferson County, WAWA33,9700.1%–

26Grant County, WAWA105,7270.1%–

27Grays Harbor County, WAWA78,1440.1%–

28Pacific County, WAWA24,3570.1%–

29Lewis County, WAWA88,0620.1%–

30Okanogan County, WAWA45,2300.1%–

31Douglas County, WAWA46,4730.0%–

SHOWING 1–31 OF 31

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