RANKING · 2024 ACS · 58 SHOWN OF 58

Highest Italian population share, California counties

California counties ranked by the share of all residents who are Italian ancestry (2024 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%. Biggest climber in the top 100 since 2020: Mono County, CA, up 27 places to #13.

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SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPITALIAN SHAREVS 2010

01Sonoma County, CACA486,4448.0%−1.3 pts

02▲4El Dorado County, CACA192,3237.1%−0.8 pts

03▼1Marin County, CACA253,6947.0%−2.3 pts

04▲8Nevada County, CACA101,9116.8%−1.4 pts

05▲2Placer County, CACA442,0816.7%−1.2 pts

06▼2Plumas County, CACA18,5836.6%−0.4 pts

07▼4Tuolumne County, CACA53,1606.5%−2.2 pts

08▲2Mariposa County, CACA16,9186.4%+0.1 pts

09▲5San Luis Obispo County, CACA282,3676.3%+0.2 pts

10▼5Amador County, CACA41,8766.3%−3.1 pts

11Calaveras County, CACA46,6056.2%−2.7 pts

12▲4Santa Cruz County, CACA258,8526.1%−1.1 pts

13▲27Mono County, CACA12,5055.8%−1.6 pts

14▲3Siskiyou County, CACA42,0135.6%−1.9 pts

15Napa County, CACA132,9495.5%−0.8 pts

16▼7San Benito County, CACA70,0825.5%−1.8 pts

17▲4Humboldt County, CACA131,6475.5%−1.3 pts

18▲6Butte County, CACA209,2115.4%−1.0 pts

19▼6Shasta County, CACA181,6485.3%−0.2 pts

20▲3Lake County, CACA67,7725.2%−2.1 pts

21▼2San Mateo County, CACA743,5685.0%−1.9 pts

22▼4Contra Costa County, CACA1,170,0704.7%−1.4 pts

23▼1Mendocino County, CACA88,1224.6%−2.2 pts

24▲3Inyo County, CACA18,1584.5%+1.2 pts

25San Francisco County, CACA826,0794.5%−0.4 pts

26▲5Yolo County, CACA224,4104.3%−0.6 pts

27▼1Ventura County, CACA830,8514.2%−0.9 pts

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

29▲4Glenn County, CACA28,1414.1%+0.7 pts

30▲24Modoc County, CACA8,4264.1%+1.0 pts

31▼2Santa Barbara County, CACA442,0653.9%−0.8 pts

32▼2Sacramento County, CACA1,618,4603.7%−1.3 pts

33▲5San Joaquin County, CACA823,8153.7%−1.4 pts

34▼2Orange County, CACA3,149,5073.6%−0.9 pts

35▲2Solano County, CACA455,3763.6%−0.5 pts

36▲6Monterey County, CACA433,7293.5%−0.7 pts

37▼2Tehama County, CACA64,6653.3%−0.4 pts

38▲1Santa Clara County, CACA1,914,3913.3%−1.3 pts

39▲2Del Norte County, CACA26,4103.2%−1.8 pts

40▲6Lassen County, CACA28,1173.1%−1.7 pts

41▼5Stanislaus County, CACA557,7193.0%−1.0 pts

42▲1Riverside County, CACA2,544,9163.0%−0.9 pts

43▲2Alameda County, CACA1,636,6303.0%−0.8 pts

44▼36Sierra County, CACA3,0982.9%−5.3 pts

45▼11Yuba County, CACA88,6912.8%−0.9 pts

46▲3Madera County, CACA167,9272.7%−0.6 pts

47▼27Alpine County, CACA1,0432.6%−8.6 pts

48Los Angeles County, CACA9,694,9342.5%−0.3 pts

49▲4Colusa County, CACA21,8362.5%−0.7 pts

50Fresno County, CACA1,035,4562.4%−1.1 pts

51Sutter County, CACA98,7872.3%−1.6 pts

52▼5San Bernardino County, CACA2,224,0912.2%−1.4 pts

53▼9Trinity County, CACA15,7202.2%−3.7 pts

54▲1Kern County, CACA927,0681.9%−0.8 pts

55▼3Kings County, CACA154,3271.9%−0.8 pts

56Merced County, CACA297,2601.8%−0.7 pts

57Tulare County, CACA485,1461.4%−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 ACS 5-YEAR ESTIMATES