RANKING · 2010 CENSUS · 39 SHOWN OF 39

Largest Costa Rican population, California counties · 2010

California counties ranked by the number of residents who are Costa Rican origin, from the 2010 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 39 counties in California that qualify, ranked against each other statewide. The median across all 39 is 126.

Costa Rican Americans: full group profile →

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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 –

01Los Angeles County, CACA9,694,9349,579–

02Orange County, CACA3,149,5072,034–

03San Bernardino County, CACA2,224,0911,572–

04Riverside County, CACA2,544,9161,320–

05Contra Costa County, CACA1,170,0701,228–

06San Diego County, CACA3,282,2481,196–

07San Francisco County, CACA826,079606–

08Alameda County, CACA1,636,630594–

09Santa Clara County, CACA1,914,391546–

10Sacramento County, CACA1,618,460545–

11Ventura County, CACA830,851482–

12Kern County, CACA927,068331–

13San Joaquin County, CACA823,815328–

14Marin County, CACA253,694272–

15San Mateo County, CACA743,568202–

16Santa Barbara County, CACA442,065179–

17Amador County, CACA41,876149–

18Napa County, CACA132,949139–

19Santa Cruz County, CACA258,852138–

20Sonoma County, CACA486,444126–

21Placer County, CACA442,081117–

22Monterey County, CACA433,72997–

23San Luis Obispo County, CACA282,36772–

24Fresno County, CACA1,035,45663–

25Solano County, CACA455,37661–

26San Benito County, CACA70,08251–

27Shasta County, CACA181,64843–

28Kings County, CACA154,32740–

29Mendocino County, CACA88,12231–

30Humboldt County, CACA131,64723–

31Stanislaus County, CACA557,71915–

32Tulare County, CACA485,14615–

33El Dorado County, CACA192,32314–

34Merced County, CACA297,26013–

35Nevada County, CACA101,91112–

36Yolo County, CACA224,4109–

37Madera County, CACA167,9279–

38Lassen County, CACA28,1176–

39Tehama County, CACA64,6654–

SHOWING 1–39 OF 39

Download CSV (full list, 39 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS