RANKING · 2020 CENSUS · 22 SHOWN OF 22

Highest Costa Rican population share, Washington counties · 2020

Washington counties ranked by the share of all residents who are Costa Rican origin (2020 American Community Survey). A concentration measure: Costa Rican residents as a percentage of total population. This list covers the 22 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

Highest Costa Rican population share by state

RANKPLACESTATEPOPCOSTA RICAN SHAREVS 2010

01Walla Walla County, WAWA62,3610.2%+0.2 pts

02Jefferson County, WAWA33,9700.2%–

03Whatcom County, WAWA236,3920.1%–

04Skagit County, WAWA132,9750.1%+0.1 pts

05Klickitat County, WAWA24,3310.1%–

06Mason County, WAWA71,1650.1%–

07King County, WAWA2,344,9390.1%+0.0 pts

08Snohomish County, WAWA870,6560.0%+0.0 pts

09Okanogan County, WAWA45,2300.0%–

10Clark County, WAWA532,1190.0%−0.0 pts

11Pierce County, WAWA946,2880.0%+0.0 pts

12Adams County, WAWA21,4880.0%–

13Yakima County, WAWA259,1850.0%+0.0 pts

14Kitsap County, WAWA283,3740.0%−0.0 pts

15Spokane County, WAWA558,3440.0%+0.0 pts

16Lewis County, WAWA88,0620.0%–

17Thurston County, WAWA304,2610.0%+0.0 pts

18Kittitas County, WAWA48,8030.0%–

19Chelan County, WAWA81,9410.0%–

20Whitman County, WAWA48,5120.0%−0.0 pts

21Island County, WAWA85,6570.0%−0.0 pts

22Benton County, WAWA221,7220.0%−0.0 pts

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS