RANKING · 2020 CENSUS · 58 SHOWN OF 58

Highest Italian population share, California counties · 2020

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

YEAR2010 2020 2024

RANKPLACESTATEPOPITALIAN SHAREVS 2000

01Sonoma County, CACA486,4448.5%–

02Marin County, CACA253,6948.0%–

03Tuolumne County, CACA53,1607.5%–

04Plumas County, CACA18,5837.2%–

05Amador County, CACA41,8767.1%–

06El Dorado County, CACA192,3237.0%–

07Placer County, CACA442,0816.8%–

08Sierra County, CACA3,0986.7%–

09San Benito County, CACA70,0826.6%–

10Mariposa County, CACA16,9186.6%–

11Calaveras County, CACA46,6056.5%–

12Nevada County, CACA101,9116.3%–

13Shasta County, CACA181,6486.0%–

14San Luis Obispo County, CACA282,3675.9%–

15Napa County, CACA132,9495.9%–

16Santa Cruz County, CACA258,8525.8%–

17Siskiyou County, CACA42,0135.6%–

18Contra Costa County, CACA1,170,0705.5%–

19San Mateo County, CACA743,5685.4%–

20Alpine County, CACA1,0435.2%–

21Humboldt County, CACA131,6475.2%–

22Mendocino County, CACA88,1225.0%–

23Lake County, CACA67,7725.0%–

24Butte County, CACA209,2115.0%–

25San Francisco County, CACA826,0794.6%–

26Ventura County, CACA830,8514.4%–

27Inyo County, CACA18,1584.3%–

28San Diego County, CACA3,282,2484.2%–

29Santa Barbara County, CACA442,0654.1%–

30Sacramento County, CACA1,618,4604.1%–

31Yolo County, CACA224,4103.9%–

32Orange County, CACA3,149,5073.9%–

33Glenn County, CACA28,1413.9%–

34Yuba County, CACA88,6913.8%–

35Tehama County, CACA64,6653.8%–

36Stanislaus County, CACA557,7193.7%–

37Solano County, CACA455,3763.7%–

38San Joaquin County, CACA823,8153.7%–

39Santa Clara County, CACA1,914,3913.6%–

40Mono County, CACA12,5053.5%–

41Del Norte County, CACA26,4103.3%–

42Monterey County, CACA433,7293.3%–

43Riverside County, CACA2,544,9163.2%–

44Trinity County, CACA15,7203.2%–

45Alameda County, CACA1,636,6303.2%–

46Lassen County, CACA28,1173.1%–

47San Bernardino County, CACA2,224,0912.7%–

48Los Angeles County, CACA9,694,9342.6%–

49Madera County, CACA167,9272.6%–

50Fresno County, CACA1,035,4562.5%–

51Sutter County, CACA98,7872.5%–

52Kings County, CACA154,3272.4%–

53Colusa County, CACA21,8362.3%–

54Modoc County, CACA8,4262.3%–

55Kern County, CACA927,0682.1%–

56Merced County, CACA297,2602.1%–

57Tulare County, CACA485,1461.5%–

58Imperial County, CACA181,4110.7%–

SHOWING 1–58 OF 58

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