RANKING · 2024 ACS · 58 SHOWN OF 58

Largest American population, California counties

California counties ranked by the number of residents who are American ancestry, 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 58 counties in California that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDHighest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share Largest Iraqi population

YEAR2010 2020 2024

RANKPLACESTATEPOPAMERICAN POPULATIONVS 2010

01Los Angeles County, CACA9,694,934308,717+49%

02Orange County, CACA3,149,507143,091+69%

03San Diego County, CACA3,282,24881,666+7%

04Riverside County, CACA2,544,91666,131+24%

05San Bernardino County, CACA2,224,09157,195+8%

06Sacramento County, CACA1,618,46038,220+17%

07Kern County, CACA927,06831,638+42%

08Santa Clara County, CACA1,914,39131,473+25%

09Alameda County, CACA1,636,63030,133+50%

10Ventura County, CACA830,85127,481−18%

11Contra Costa County, CACA1,170,07025,207+4%

12San Mateo County, CACA743,56821,060+88%

13San Francisco County, CACA826,07916,837+109%

14Fresno County, CACA1,035,45616,684+12%

15San Joaquin County, CACA823,81513,999−6%

16Placer County, CACA442,08113,073+3%

17Sonoma County, CACA486,44412,249−7%

18Stanislaus County, CACA557,71911,868−29%

19Shasta County, CACA181,64811,829−15%

20Solano County, CACA455,37610,800+18%

21Butte County, CACA209,21110,470−35%

22Santa Barbara County, CACA442,06510,101−1%

23Tulare County, CACA485,1468,785−22%

24Monterey County, CACA433,7296,754+6%

25San Luis Obispo County, CACA282,3676,323−35%

26Tehama County, CACA64,6656,071+52%

27El Dorado County, CACA192,3236,045−20%

28Marin County, CACA253,6945,849+10%

29Merced County, CACA297,2604,976−15%

30Yolo County, CACA224,4104,943+21%

31Santa Cruz County, CACA258,8524,920−22%

32Nevada County, CACA101,9113,367−19%

33Trinity County, CACA15,7203,283+833%

34Napa County, CACA132,9493,189−12%

35Kings County, CACA154,3273,142−28%

36Humboldt County, CACA131,6473,081−33%

37Lake County, CACA67,7722,766+25%

38Madera County, CACA167,9272,672−3%

39Imperial County, CACA181,4112,624+27%

40Yuba County, CACA88,6912,609−54%

41Sutter County, CACA98,7872,195−60%

42Glenn County, CACA28,1412,105+57%

43Amador County, CACA41,8761,451−5%

44Del Norte County, CACA26,4101,447−9%

45Siskiyou County, CACA42,0131,331−24%

46San Benito County, CACA70,0821,318+7%

47Mendocino County, CACA88,1221,236−59%

48Calaveras County, CACA46,6051,194−49%

49Tuolumne County, CACA53,1601,122−52%

50Colusa County, CACA21,836996−4%

51Inyo County, CACA18,158910+24%

52Lassen County, CACA28,117850−36%

53Modoc County, CACA8,426546+116%

54Plumas County, CACA18,583520−25%

55Mono County, CACA12,505494+60%

56Mariposa County, CACA16,918428−28%

57Sierra County, CACA3,098124+1%

58Alpine County, CACA1,04399+560%

SHOWING 1–58 OF 58

Download CSV (full list, 58 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES