RANKING · 2020 CENSUS · 58 SHOWN OF 58

Highest Mexican population share, California counties · 2020

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, CACA181,41181.4%–

02Tulare County, CACA485,14662.1%–

03Merced County, CACA297,26057.4%–

04Colusa County, CACA21,83657.2%–

05Madera County, CACA167,92755.4%–

06San Benito County, CACA70,08254.9%–

07Monterey County, CACA433,72954.5%–

08Kings County, CACA154,32751.7%–

09Fresno County, CACA1,035,45649.3%–

10Kern County, CACA927,06849.1%–

11San Bernardino County, CACA2,224,09145.6%–

12Riverside County, CACA2,544,91643.5%–

13Stanislaus County, CACA557,71943.2%–

14Santa Barbara County, CACA442,06541.3%–

15Glenn County, CACA28,14139.3%–

16Ventura County, CACA830,85138.0%–

17San Joaquin County, CACA823,81537.2%–

18Los Angeles County, CACA9,694,93436.3%–

19Santa Cruz County, CACA258,85229.8%–

20San Diego County, CACA3,282,24829.7%–

21Napa County, CACA132,94929.2%–

22Sutter County, CACA98,78728.8%–

23Orange County, CACA3,149,50728.7%–

24Yolo County, CACA224,41027.1%–

25Mono County, CACA12,50526.0%–

26Yuba County, CACA88,69124.6%–

27Tehama County, CACA64,66523.8%–

28Mendocino County, CACA88,12223.8%–

29Sonoma County, CACA486,44422.7%–

30Solano County, CACA455,37620.6%–

31Santa Clara County, CACA1,914,39120.4%–

32San Luis Obispo County, CACA282,36719.6%–

33Inyo County, CACA18,15819.5%–

34Sacramento County, CACA1,618,46019.2%–

35Lake County, CACA67,77218.8%–

36Lassen County, CACA28,11718.0%–

37Contra Costa County, CACA1,170,07017.1%–

38Alameda County, CACA1,636,63016.2%–

39Butte County, CACA209,21114.3%–

40San Mateo County, CACA743,56814.2%–

41Del Norte County, CACA26,41013.7%–

42Modoc County, CACA8,42613.1%–

43Siskiyou County, CACA42,01310.9%–

44Amador County, CACA41,87610.1%–

45Placer County, CACA442,08110.0%–

46El Dorado County, CACA192,32310.0%–

47Mariposa County, CACA16,9189.8%–

48Alpine County, CACA1,0439.7%–

49Calaveras County, CACA46,6059.3%–

50Humboldt County, CACA131,6479.2%–

51Shasta County, CACA181,6487.9%–

52Nevada County, CACA101,9117.9%–

53San Francisco County, CACA826,0797.7%–

54Tuolumne County, CACA53,1607.5%–

55Plumas County, CACA18,5837.1%–

56Marin County, CACA253,6947.0%–

57Sierra County, CACA3,0987.0%–

58Trinity County, CACA15,7205.2%–

SHOWING 1–58 OF 58

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