RANKING · 2024 ACS · 44 SHOWN OF 44

Largest Costa Rican population, California counties

California counties ranked by the number of residents who are Costa Rican origin, from the 2023 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 44 counties in California that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

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 2000

01Los Angeles County, CACA9,694,93410,509–

02Orange County, CACA3,149,5072,684–

03Riverside County, CACA2,544,9162,463–

04San Bernardino County, CACA2,224,0912,376–

05San Diego County, CACA3,282,2481,978–

06Ventura County, CACA830,8511,287–

07Contra Costa County, CACA1,170,0701,153–

08Santa Clara County, CACA1,914,3911,007–

09San Francisco County, CACA826,079956–

10Alameda County, CACA1,636,630887–

11Sacramento County, CACA1,618,460765–

12San Mateo County, CACA743,568413–

13Fresno County, CACA1,035,456388–

14Kern County, CACA927,068309–

15Marin County, CACA253,694228–

16Merced County, CACA297,260209–

17Placer County, CACA442,081193–

18Santa Cruz County, CACA258,852182–

19Sonoma County, CACA486,444181–

20Humboldt County, CACA131,647171–

21Colusa County, CACA21,836144–

22El Dorado County, CACA192,323140–

23San Benito County, CACA70,082123–

24Shasta County, CACA181,648122–

25San Luis Obispo County, CACA282,367116–

26Mariposa County, CACA16,918109–

27Santa Barbara County, CACA442,06596–

28San Joaquin County, CACA823,81592–

29Monterey County, CACA433,72990–

30Yolo County, CACA224,41073–

31Mendocino County, CACA88,12272–

32Tulare County, CACA485,14670–

33Butte County, CACA209,21155–

34Madera County, CACA167,92755–

35Tehama County, CACA64,66543–

36Calaveras County, CACA46,60534–

37Yuba County, CACA88,69127–

38Napa County, CACA132,94921–

39Lassen County, CACA28,11719–

40Solano County, CACA455,37614–

41Stanislaus County, CACA557,7196–

42Kings County, CACA154,3275–

43Mono County, CACA12,5055–

44Siskiyou County, CACA42,0133–

SHOWING 1–44 OF 44

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