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 (2010 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. The median across all 58 is 2.8%.

American ancestry: full group profile →

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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 –

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