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 (2020 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. The median across all 58 is 4.1%.

Italian Americans: full group profile →

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SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPITALIAN SHAREVS 2010

01Sonoma County, CACA486,4448.5%−0.8 pts

02Marin County, CACA253,6948.0%−1.3 pts

03Tuolumne County, CACA53,1607.5%−1.2 pts

04Plumas County, CACA18,5837.2%+0.1 pts

05Amador County, CACA41,8767.1%−2.3 pts

06El Dorado County, CACA192,3237.0%−1.0 pts

07Placer County, CACA442,0816.8%−1.1 pts

08Sierra County, CACA3,0986.7%−1.5 pts

09San Benito County, CACA70,0826.6%−0.7 pts

10Mariposa County, CACA16,9186.6%+0.3 pts

11Calaveras County, CACA46,6056.5%−2.4 pts

12Nevada County, CACA101,9116.3%−1.8 pts

13Shasta County, CACA181,6486.0%+0.5 pts

14San Luis Obispo County, CACA282,3675.9%−0.2 pts

15Napa County, CACA132,9495.9%−0.4 pts

16Santa Cruz County, CACA258,8525.8%−1.3 pts

17Siskiyou County, CACA42,0135.6%−1.9 pts

18Contra Costa County, CACA1,170,0705.5%−0.7 pts

19San Mateo County, CACA743,5685.4%−1.5 pts

20Alpine County, CACA1,0435.2%−6.0 pts

21Humboldt County, CACA131,6475.2%−1.6 pts

22Mendocino County, CACA88,1225.0%−1.7 pts

23Lake County, CACA67,7725.0%−2.3 pts

24Butte County, CACA209,2115.0%−1.5 pts

25San Francisco County, CACA826,0794.6%−0.3 pts

26Ventura County, CACA830,8514.4%−0.6 pts

27Inyo County, CACA18,1584.3%+0.9 pts

28San Diego County, CACA3,282,2484.2%−0.6 pts

29Santa Barbara County, CACA442,0654.1%−0.6 pts

30Sacramento County, CACA1,618,4604.1%−1.0 pts

31Yolo County, CACA224,4103.9%−1.0 pts

32Orange County, CACA3,149,5073.9%−0.6 pts

33Glenn County, CACA28,1413.9%+0.5 pts

34Yuba County, CACA88,6913.8%+0.1 pts

35Tehama County, CACA64,6653.8%0.0 pts

36Stanislaus County, CACA557,7193.7%−0.3 pts

37Solano County, CACA455,3763.7%−0.4 pts

38San Joaquin County, CACA823,8153.7%−1.4 pts

39Santa Clara County, CACA1,914,3913.6%−1.0 pts

40Mono County, CACA12,5053.5%−3.9 pts

41Del Norte County, CACA26,4103.3%−1.7 pts

42Monterey County, CACA433,7293.3%−0.9 pts

43Riverside County, CACA2,544,9163.2%−0.7 pts

44Trinity County, CACA15,7203.2%−2.7 pts

45Alameda County, CACA1,636,6303.2%−0.6 pts

46Lassen County, CACA28,1173.1%−1.7 pts

47San Bernardino County, CACA2,224,0912.7%−0.9 pts

48Los Angeles County, CACA9,694,9342.6%−0.2 pts

49Madera County, CACA167,9272.6%−0.7 pts

50Fresno County, CACA1,035,4562.5%−0.9 pts

51Sutter County, CACA98,7872.5%−1.4 pts

52Kings County, CACA154,3272.4%−0.3 pts

53Colusa County, CACA21,8362.3%−0.8 pts

54Modoc County, CACA8,4262.3%−0.7 pts

55Kern County, CACA927,0682.1%−0.6 pts

56Merced County, CACA297,2602.1%−0.5 pts

57Tulare County, CACA485,1461.5%−0.1 pts

58Imperial County, CACA181,4110.7%−0.5 pts

SHOWING 1–58 OF 58

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