RANKING · 2010 CENSUS · 55 SHOWN OF 55

Highest Puerto Rican population share, California counties · 2010

California counties ranked by the share of all residents who are Puerto Rican origin (2010 American Community Survey). A concentration measure: Puerto Rican residents as a percentage of total population. This list covers the 55 counties in California that qualify, ranked against each other statewide. The median across all 55 is 0.3%.

Puerto 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 Largest Cuban population Highest Cuban population share Largest Dominican population

YEAR2010 2020 2024

RANKPLACESTATEPOPPUERTO RICAN SHAREVS –

01Solano County, CACA455,3760.8%–

02Alameda County, CACA1,636,6300.8%–

03Nevada County, CACA101,9110.7%–

04Lassen County, CACA28,1170.7%–

05Stanislaus County, CACA557,7190.6%–

06San Bernardino County, CACA2,224,0910.6%–

07San Joaquin County, CACA823,8150.6%–

08Riverside County, CACA2,544,9160.6%–

09Yuba County, CACA88,6910.6%–

10Sacramento County, CACA1,618,4600.6%–

11San Mateo County, CACA743,5680.6%–

12Contra Costa County, CACA1,170,0700.6%–

13Kings County, CACA154,3270.5%–

14San Diego County, CACA3,282,2480.5%–

15Yolo County, CACA224,4100.5%–

16Madera County, CACA167,9270.5%–

17Kern County, CACA927,0680.5%–

18San Francisco County, CACA826,0790.5%–

19Monterey County, CACA433,7290.5%–

20Los Angeles County, CACA9,694,9340.4%–

21Santa Clara County, CACA1,914,3910.4%–

22Placer County, CACA442,0810.4%–

23Lake County, CACA67,7720.4%–

24Sutter County, CACA98,7870.4%–

25Orange County, CACA3,149,5070.4%–

26Del Norte County, CACA26,4100.4%–

27Marin County, CACA253,6940.3%–

28Sonoma County, CACA486,4440.3%–

29Santa Barbara County, CACA442,0650.3%–

30Butte County, CACA209,2110.3%–

31Amador County, CACA41,8760.3%–

32Ventura County, CACA830,8510.3%–

33Tehama County, CACA64,6650.3%–

34Merced County, CACA297,2600.3%–

35Imperial County, CACA181,4110.3%–

36Tuolumne County, CACA53,1600.3%–

37Glenn County, CACA28,1410.3%–

38El Dorado County, CACA192,3230.3%–

39San Luis Obispo County, CACA282,3670.3%–

40Tulare County, CACA485,1460.2%–

41Colusa County, CACA21,8360.2%–

42Fresno County, CACA1,035,4560.2%–

43Mendocino County, CACA88,1220.2%–

44San Benito County, CACA70,0820.2%–

45Trinity County, CACA15,7200.2%–

46Shasta County, CACA181,6480.2%–

47Napa County, CACA132,9490.2%–

48Inyo County, CACA18,1580.2%–

49Plumas County, CACA18,5830.1%–

50Santa Cruz County, CACA258,8520.1%–

51Siskiyou County, CACA42,0130.1%–

52Mono County, CACA12,5050.1%–

53Humboldt County, CACA131,6470.1%–

54Calaveras County, CACA46,6050.1%–

55Modoc County, CACA8,4260.0%–

SHOWING 1–55 OF 55

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