RANKING · 2024 ACS · 54 SHOWN OF 54

Largest Puerto Rican population, California counties

California counties ranked by the number of residents who are Puerto Rican origin, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 54 counties in California that qualify, ranked against each other statewide. The median across all 54 is 975. Biggest climber in the top 100 since 2020: Tuolumne County, CA, up 11 places to #30.

Puerto Rican Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest Mexican population Highest Mexican population share Highest Puerto Rican population share Largest Cuban population Highest Cuban population share Largest Dominican population

YEAR2010 2020 2024

RANKPLACESTATEPOPPUERTO RICAN POPULATIONVS 2010

01Los Angeles County, CACA9,694,93447,517+10%

02San Diego County, CACA3,282,24826,187+63%

03▲1Riverside County, CACA2,544,91617,705+39%

04▼1San Bernardino County, CACA2,224,09114,978+18%

05▲1Orange County, CACA3,149,50712,691+16%

06▲1Sacramento County, CACA1,618,46011,570+45%

07▼2Alameda County, CACA1,636,63011,564+4%

08Contra Costa County, CACA1,170,0708,022+39%

09Santa Clara County, CACA1,914,3918,004+12%

10San Joaquin County, CACA823,8155,820+39%

11San Francisco County, CACA826,0795,793+61%

12▲1Kern County, CACA927,0684,629+17%

13▲4Ventura County, CACA830,8514,555+68%

14San Mateo County, CACA743,5684,483+11%

15Fresno County, CACA1,035,4564,173+96%

16▼4Solano County, CACA455,3763,739+17%

17▼1Stanislaus County, CACA557,7193,124−5%

18Placer County, CACA442,0813,037+121%

19Monterey County, CACA433,7292,419+31%

20Sonoma County, CACA486,4442,213+37%

21Santa Barbara County, CACA442,0651,654+18%

22Tulare County, CACA485,1461,427+33%

23▲3Santa Cruz County, CACA258,8521,310+340%

24▲6Marin County, CACA253,6941,250+47%

25▼2San Luis Obispo County, CACA282,3671,199+75%

26▲7Kings County, CACA154,3271,011+25%

27▲8Merced County, CACA297,260975+25%

28▲3Yuba County, CACA88,691887+112%

29▼4El Dorado County, CACA192,323815+75%

30▲11Tuolumne County, CACA53,160814+415%

31▼4Napa County, CACA132,949810+232%

32▲4Humboldt County, CACA131,647745+583%

33▼5Butte County, CACA209,211719−2%

34▲3Sutter County, CACA98,787699+97%

35▼11Yolo County, CACA224,410690−33%

36▲3Nevada County, CACA101,911665−4%

37▼3Shasta County, CACA181,648632+66%

38Madera County, CACA167,927611−17%

39▼7Imperial County, CACA181,411434−12%

40▲10Tehama County, CACA64,665398+96%

41▼12San Benito County, CACA70,082327+164%

42▲5Calaveras County, CACA46,605301+871%

43▼3Mendocino County, CACA88,122280+37%

44Siskiyou County, CACA42,013210+367%

45▲3Lake County, CACA67,772173−33%

46▼4Amador County, CACA41,876169+31%

47▲5Inyo County, CACA18,158156+420%

48▼2Plumas County, CACA18,583136+404%

49▲4Lassen County, CACA28,117133−46%

50▼7Del Norte County, CACA26,410109+5%

51▼6Mariposa County, CACA16,918102–

52▲4Trinity County, CACA15,72010−67%

53▼4Glenn County, CACA28,1417−90%

54▼3Colusa County, CACA21,8361−98%

SHOWING 1–54 OF 54

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES