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 (2023 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.

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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

01Jefferson County, WAWA33,9700.3%–

02Whitman County, WAWA48,5120.1%–

03Skagit County, WAWA132,9750.1%–

04Benton County, WAWA221,7220.1%–

05Mason County, WAWA71,1650.1%–

06Yakima County, WAWA259,1850.1%–

07Pierce County, WAWA946,2880.1%–

08Whatcom County, WAWA236,3920.1%–

09Clallam County, WAWA78,2020.0%–

10Snohomish County, WAWA870,6560.0%–

11Kitsap County, WAWA283,3740.0%–

12Clark County, WAWA532,1190.0%–

13King County, WAWA2,344,9390.0%–

14Spokane County, WAWA558,3440.0%–

15Walla Walla County, WAWA62,3610.0%–

16Kittitas County, WAWA48,8030.0%–

17Chelan County, WAWA81,9410.0%–

18Thurston County, WAWA304,2610.0%–

19Franklin County, WAWA102,6120.0%–

20Island County, WAWA85,6570.0%–

SHOWING 1–20 OF 20

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