RANKING · 2024 ACS · 58 SHOWN OF 58

Highest Mexican population share, California counties

California counties ranked by the share of all residents who are Mexican origin (2023 American Community Survey). A concentration measure: Mexican residents as a percentage of total population. This list covers the 58 counties in California that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

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

YEAR2010 2020 2024

RANKPLACESTATEPOPMEXICAN SHAREVS 2000

01Imperial County, CACA181,41182.9%–

02Tulare County, CACA485,14662.1%–

03Colusa County, CACA21,83660.5%–

04Merced County, CACA297,26060.5%–

05Madera County, CACA167,92757.5%–

06San Benito County, CACA70,08256.4%–

07Monterey County, CACA433,72956.3%–

08Kings County, CACA154,32754.3%–

09Kern County, CACA927,06850.4%–

10Fresno County, CACA1,035,45650.1%–

11San Bernardino County, CACA2,224,09146.8%–

12Stanislaus County, CACA557,71946.0%–

13Riverside County, CACA2,544,91644.0%–

14Glenn County, CACA28,14143.4%–

15Santa Barbara County, CACA442,06543.1%–

16Ventura County, CACA830,85138.5%–

17San Joaquin County, CACA823,81537.2%–

18Los Angeles County, CACA9,694,93435.3%–

19Napa County, CACA132,94930.5%–

20Santa Cruz County, CACA258,85230.4%–

21San Diego County, CACA3,282,24829.7%–

22Sutter County, CACA98,78728.7%–

23Yolo County, CACA224,41028.7%–

24Orange County, CACA3,149,50728.3%–

25Yuba County, CACA88,69125.8%–

26Tehama County, CACA64,66525.1%–

27Mendocino County, CACA88,12224.5%–

28Mono County, CACA12,50524.3%–

29Sonoma County, CACA486,44424.3%–

30Solano County, CACA455,37622.2%–

31San Luis Obispo County, CACA282,36721.0%–

32Lake County, CACA67,77220.9%–

33Santa Clara County, CACA1,914,39119.9%–

34Sacramento County, CACA1,618,46019.3%–

35Inyo County, CACA18,15818.6%–

36Contra Costa County, CACA1,170,07018.1%–

37Lassen County, CACA28,11717.0%–

38Butte County, CACA209,21117.0%–

39Alameda County, CACA1,636,63016.2%–

40Del Norte County, CACA26,41015.5%–

41San Mateo County, CACA743,56814.4%–

42Modoc County, CACA8,42613.0%–

43Amador County, CACA41,87611.1%–

44Humboldt County, CACA131,64711.0%–

45Placer County, CACA442,08110.9%–

46Calaveras County, CACA46,60510.9%–

47Mariposa County, CACA16,91810.8%–

48Siskiyou County, CACA42,01310.6%–

49El Dorado County, CACA192,32310.5%–

50Sierra County, CACA3,09810.3%–

51Alpine County, CACA1,0439.2%–

52Shasta County, CACA181,6488.8%–

53Tuolumne County, CACA53,1608.0%–

54San Francisco County, CACA826,0797.9%–

55Marin County, CACA253,6947.9%–

56Nevada County, CACA101,9117.0%–

57Plumas County, CACA18,5836.6%–

58Trinity County, CACA15,7203.7%–

SHOWING 1–58 OF 58

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