RANKING · 2010 CENSUS · 58 SHOWN OF 58

Highest American population share, California counties · 2010

California counties ranked by the share of all residents who are American ancestry (2023 American Community Survey). A concentration measure: American 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 American population Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share Largest Iraqi population

YEAR2010 2020 2024

RANKPLACESTATEPOPAMERICAN SHAREVS 2000

01Yuba County, CACA88,6918.0%–

02Shasta County, CACA181,6487.9%–

03Butte County, CACA209,2117.4%–

04Tehama County, CACA64,6656.4%–

05Sutter County, CACA98,7875.9%–

06Del Norte County, CACA26,4105.6%–

07Calaveras County, CACA46,6055.1%–

08Colusa County, CACA21,8364.9%–

09Glenn County, CACA28,1414.8%–

10Tuolumne County, CACA53,1604.2%–

11Nevada County, CACA101,9114.2%–

12El Dorado County, CACA192,3234.2%–

13Ventura County, CACA830,8514.2%–

14Amador County, CACA41,8764.0%–

15Inyo County, CACA18,1584.0%–

16Siskiyou County, CACA42,0133.9%–

17Lassen County, CACA28,1173.8%–

18Placer County, CACA442,0813.8%–

19San Luis Obispo County, CACA282,3673.7%–

20Sierra County, CACA3,0983.7%–

21Mendocino County, CACA88,1223.5%–

22Humboldt County, CACA131,6473.5%–

23Lake County, CACA67,7723.4%–

24Plumas County, CACA18,5833.4%–

25Mariposa County, CACA16,9183.3%–

26Stanislaus County, CACA557,7193.3%–

27Kings County, CACA154,3272.9%–

28Orange County, CACA3,149,5072.8%–

29Sonoma County, CACA486,4442.8%–

30Kern County, CACA927,0682.7%–

31Napa County, CACA132,9492.7%–

32San Bernardino County, CACA2,224,0912.6%–

33Modoc County, CACA8,4262.6%–

34Tulare County, CACA485,1462.6%–

35Trinity County, CACA15,7202.6%–

36Riverside County, CACA2,544,9162.5%–

37San Diego County, CACA3,282,2482.5%–

38Santa Barbara County, CACA442,0652.4%–

39Santa Cruz County, CACA258,8522.4%–

40Contra Costa County, CACA1,170,0702.4%–

41Merced County, CACA297,2602.3%–

42Sacramento County, CACA1,618,4602.3%–

43San Benito County, CACA70,0822.3%–

44Solano County, CACA455,3762.2%–

45San Joaquin County, CACA823,8152.2%–

46Mono County, CACA12,5052.2%–

47Marin County, CACA253,6942.1%–

48Los Angeles County, CACA9,694,9342.1%–

49Yolo County, CACA224,4102.1%–

50Madera County, CACA167,9271.9%–

51Fresno County, CACA1,035,4561.6%–

52San Mateo County, CACA743,5681.6%–

53Monterey County, CACA433,7291.6%–

54Santa Clara County, CACA1,914,3911.4%–

55Alameda County, CACA1,636,6301.4%–

56Alpine County, CACA1,0431.3%–

57Imperial County, CACA181,4111.2%–

58San Francisco County, CACA826,0791.0%–

SHOWING 1–58 OF 58

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