RANKING · 2024 ACS · 20 SHOWN OF 20

Largest Costa Rican population, Washington counties

Washington counties ranked by the number of residents who are Costa Rican origin, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 20 counties in Washington that qualify, ranked against each other statewide.

Costa Rican Americans: full group profile →

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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

Largest Costa Rican population by state

RANKPLACESTATEPOPCOSTA RICAN POPULATIONVS 2010

01King County, WAWA2,344,939769+17%

02Pierce County, WAWA946,288597+753%

03Snohomish County, WAWA870,656311+143%

04Benton County, WAWA221,722183+1564%

05Clark County, WAWA532,119181−17%

06Yakima County, WAWA259,185172+1620%

07Spokane County, WAWA558,344170+143%

08Whatcom County, WAWA236,392137–

09Skagit County, WAWA132,975131+6450%

10Jefferson County, WAWA33,970112–

11Kitsap County, WAWA283,374101+120%

12Whitman County, WAWA48,51264+611%

13Mason County, WAWA71,16547–

14Thurston County, WAWA304,26133+154%

15Clallam County, WAWA78,20229−9%

16Walla Walla County, WAWA62,36119+850%

17Chelan County, WAWA81,94116–

18Franklin County, WAWA102,61210–

19Kittitas County, WAWA48,80310–

20Island County, WAWA85,6578−11%

SHOWING 1–20 OF 20

Download CSV (full list, 20 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES