RANKING · 2010 CENSUS · 58 SHOWN OF 58

Highest Mexican population share, California counties · 2010

California counties ranked by the share of all residents who are Mexican origin (2010 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. The median across all 58 is 19.1%.

Mexican Americans: full group profile →

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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 –

01Imperial County, CACA181,41177.0%–

02Tulare County, CACA485,14657.0%–

03San Benito County, CACA70,08251.0%–

04Merced County, CACA297,26050.4%–

05Monterey County, CACA433,72949.7%–

06Madera County, CACA167,92749.0%–

07Colusa County, CACA21,83647.9%–

08Kings County, CACA154,32746.4%–

09Fresno County, CACA1,035,45646.1%–

10Kern County, CACA927,06843.5%–

11San Bernardino County, CACA2,224,09141.4%–

12Riverside County, CACA2,544,91639.2%–

13Santa Barbara County, CACA442,06537.6%–

14Stanislaus County, CACA557,71937.4%–

15Los Angeles County, CACA9,694,93436.3%–

16Ventura County, CACA830,85135.1%–

17San Joaquin County, CACA823,81533.4%–

18Glenn County, CACA28,14133.2%–

19Orange County, CACA3,149,50728.5%–

20Santa Cruz County, CACA258,85228.1%–

21San Diego County, CACA3,282,24827.9%–

22Napa County, CACA132,94927.2%–

23Sutter County, CACA98,78725.4%–

24Yolo County, CACA224,41025.0%–

25Santa Clara County, CACA1,914,39122.2%–

26Yuba County, CACA88,69121.5%–

27Sonoma County, CACA486,44420.8%–

28Mono County, CACA12,50520.0%–

29Mendocino County, CACA88,12219.1%–

30Tehama County, CACA64,66518.4%–

31Solano County, CACA455,37618.4%–

32Sacramento County, CACA1,618,46017.2%–

33San Luis Obispo County, CACA282,36716.9%–

34Contra Costa County, CACA1,170,07016.8%–

35Alameda County, CACA1,636,63016.6%–

36San Mateo County, CACA743,56816.0%–

37Inyo County, CACA18,15815.9%–

38Del Norte County, CACA26,41015.4%–

39Lassen County, CACA28,11714.0%–

40Lake County, CACA67,77213.7%–

41Modoc County, CACA8,42611.8%–

42Butte County, CACA209,21111.3%–

43Amador County, CACA41,8769.3%–

44Placer County, CACA442,0819.3%–

45El Dorado County, CACA192,3239.0%–

46Tuolumne County, CACA53,1608.5%–

47Calaveras County, CACA46,6058.5%–

48Siskiyou County, CACA42,0138.5%–

49San Francisco County, CACA826,0797.8%–

50Humboldt County, CACA131,6477.7%–

51Mariposa County, CACA16,9187.5%–

52Marin County, CACA253,6947.5%–

53Plumas County, CACA18,5837.0%–

54Nevada County, CACA101,9116.3%–

55Sierra County, CACA3,0986.1%–

56Shasta County, CACA181,6486.0%–

57Trinity County, CACA15,7205.2%–

58Alpine County, CACA1,0431.8%–

SHOWING 1–58 OF 58

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