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. The median across all 58 is 4,976. Biggest climber in the top 100 since 2020: Trinity County, CA, up 12 places to #33.

American ancestry: full group profile →

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SAME RANKING BYCities States Metros

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%

06▲2Sacramento County, CACA1,618,46038,220+17%

07▲3Kern County, CACA927,06831,638+42%

08▼1Santa Clara County, CACA1,914,39131,473+25%

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

10▼4Ventura County, CACA830,85127,481−18%

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

12▲1San Mateo County, CACA743,56821,060+88%

13▼1San Francisco County, CACA826,07916,837+109%

14▲2Fresno County, CACA1,035,45616,684+12%

15▲3San Joaquin County, CACA823,81513,999−6%

16▲1Placer County, CACA442,08113,073+3%

17▲2Sonoma County, CACA486,44412,249−7%

18▼4Stanislaus County, CACA557,71911,868−29%

19▲1Shasta County, CACA181,64811,829−15%

20▲3Solano County, CACA455,37610,800+18%

21▼6Butte County, CACA209,21110,470−35%

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

23▲1Tulare County, CACA485,1468,785−22%

24▲3Monterey County, CACA433,7296,754+6%

25▼3San Luis Obispo County, CACA282,3676,323−35%

26▲3Tehama County, CACA64,6656,071+52%

27▼1El Dorado County, CACA192,3236,045−20%

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

29▲2Merced County, CACA297,2604,976−15%

30▲3Yolo County, CACA224,4104,943+21%

31▼6Santa Cruz County, CACA258,8524,920−22%

32▲4Nevada County, CACA101,9113,367−19%

33▲12Trinity County, CACA15,7203,283+833%

34▼4Napa County, CACA132,9493,189−12%

35▲4Kings County, CACA154,3273,142−28%

36▼4Humboldt County, CACA131,6473,081−33%

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

38▼4Madera County, CACA167,9272,672−3%

39▲1Imperial County, CACA181,4112,624+27%

40▼2Yuba County, CACA88,6912,609−54%

41▼6Sutter County, CACA98,7872,195−60%

42▲2Glenn County, CACA28,1412,105+57%

43▲3Amador County, CACA41,8761,451−5%

44▲6Del Norte County, CACA26,4101,447−9%

45▼4Siskiyou County, CACA42,0131,331−24%

46▲2San Benito County, CACA70,0821,318+7%

47▼5Mendocino County, CACA88,1221,236−59%

48▼1Calaveras County, CACA46,6051,194−49%

49▼6Tuolumne County, CACA53,1601,122−52%

50▲5Colusa County, CACA21,836996−4%

51Inyo County, CACA18,158910+24%

52▼3Lassen County, CACA28,117850−36%

53▲3Modoc County, CACA8,426546+116%

54▼2Plumas County, CACA18,583520−25%

55▼1Mono County, CACA12,505494+60%

56▼3Mariposa County, CACA16,918428−28%

57▲1Sierra County, CACA3,098124+1%

58▼1Alpine County, CACA1,04399+560%

SHOWING 1–58 OF 58

Download CSV (full list, 58 rows)

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