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 (2023 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.

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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 2000

01Walla Walla County, WAWA62,3610.2%–

02Jefferson County, WAWA33,9700.2%–

03Whatcom County, WAWA236,3920.1%–

04Skagit County, WAWA132,9750.1%–

05Klickitat County, WAWA24,3310.1%–

06Mason County, WAWA71,1650.1%–

07King County, WAWA2,344,9390.1%–

08Snohomish County, WAWA870,6560.0%–

09Okanogan County, WAWA45,2300.0%–

10Clark County, WAWA532,1190.0%–

11Pierce County, WAWA946,2880.0%–

12Adams County, WAWA21,4880.0%–

13Yakima County, WAWA259,1850.0%–

14Kitsap County, WAWA283,3740.0%–

15Spokane County, WAWA558,3440.0%–

16Lewis County, WAWA88,0620.0%–

17Thurston County, WAWA304,2610.0%–

18Kittitas County, WAWA48,8030.0%–

19Chelan County, WAWA81,9410.0%–

20Whitman County, WAWA48,5120.0%–

21Island County, WAWA85,6570.0%–

22Benton County, WAWA221,7220.0%–

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