RANKING · 2024 ACS · 20 SHOWN OF 20

Highest Costa Rican population share, Washington counties

Washington counties ranked by the share of all residents who are Costa Rican origin (2024 American Community Survey). A concentration measure: Costa Rican residents as a percentage of total population. 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

Highest Costa Rican population share by state

RANKPLACESTATEPOPCOSTA RICAN SHAREVS 2010

01Jefferson County, WAWA33,9700.3%–

02Whitman County, WAWA48,5120.1%+0.1 pts

03Skagit County, WAWA132,9750.1%+0.1 pts

04Benton County, WAWA221,7220.1%+0.1 pts

05Mason County, WAWA71,1650.1%–

06Yakima County, WAWA259,1850.1%+0.1 pts

07Pierce County, WAWA946,2880.1%+0.1 pts

08Whatcom County, WAWA236,3920.1%–

09Clallam County, WAWA78,2020.0%−0.0 pts

10Snohomish County, WAWA870,6560.0%+0.0 pts

11Kitsap County, WAWA283,3740.0%+0.0 pts

12Clark County, WAWA532,1190.0%−0.0 pts

13King County, WAWA2,344,9390.0%−0.0 pts

14Spokane County, WAWA558,3440.0%+0.0 pts

15Walla Walla County, WAWA62,3610.0%+0.0 pts

16Kittitas County, WAWA48,8030.0%–

17Chelan County, WAWA81,9410.0%–

18Thurston County, WAWA304,2610.0%+0.0 pts

19Franklin County, WAWA102,6120.0%–

20Island County, WAWA85,6570.0%−0.0 pts

SHOWING 1–20 OF 20

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES