RANKING · 2024 ACS · 47 SHOWN OF 47

Highest Iranian population share, California counties

California counties ranked by the share of all residents who are Iranian ancestry (2023 American Community Survey). A concentration measure: Iranian residents as a percentage of total population. This list covers the 47 counties in California that qualify, ranked against each other statewide.

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RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

Highest Iranian population share by state

RANKPLACESTATEPOPIRANIAN SHAREVS 2000

01Orange County, CACA3,149,5071.3%–

02Santa Clara County, CACA1,914,3911.1%–

03Los Angeles County, CACA9,694,9340.9%–

04Marin County, CACA253,6940.9%–

05Contra Costa County, CACA1,170,0700.8%–

06San Mateo County, CACA743,5680.7%–

07Ventura County, CACA830,8510.6%–

08San Diego County, CACA3,282,2480.5%–

09Alameda County, CACA1,636,6300.5%–

10San Francisco County, CACA826,0790.5%–

11Placer County, CACA442,0810.4%–

12Yolo County, CACA224,4100.4%–

13Sacramento County, CACA1,618,4600.4%–

14Santa Barbara County, CACA442,0650.3%–

15Santa Cruz County, CACA258,8520.3%–

16El Dorado County, CACA192,3230.3%–

17Lassen County, CACA28,1170.2%–

18Stanislaus County, CACA557,7190.2%–

19Riverside County, CACA2,544,9160.2%–

20Sonoma County, CACA486,4440.2%–

21Napa County, CACA132,9490.2%–

22San Joaquin County, CACA823,8150.2%–

23San Luis Obispo County, CACA282,3670.2%–

24Monterey County, CACA433,7290.1%–

25San Bernardino County, CACA2,224,0910.1%–

26Shasta County, CACA181,6480.1%–

27Solano County, CACA455,3760.1%–

28Fresno County, CACA1,035,4560.1%–

29Merced County, CACA297,2600.1%–

30Lake County, CACA67,7720.1%–

31Madera County, CACA167,9270.1%–

32Butte County, CACA209,2110.1%–

33Tulare County, CACA485,1460.1%–

34Humboldt County, CACA131,6470.1%–

35Mariposa County, CACA16,9180.1%–

36Nevada County, CACA101,9110.1%–

37Yuba County, CACA88,6910.1%–

38Del Norte County, CACA26,4100.1%–

39Kern County, CACA927,0680.0%–

40Sutter County, CACA98,7870.0%–

41Mendocino County, CACA88,1220.0%–

42Kings County, CACA154,3270.0%–

43Siskiyou County, CACA42,0130.0%–

44Plumas County, CACA18,5830.0%–

45Tuolumne County, CACA53,1600.0%–

46Calaveras County, CACA46,6050.0%–

47Imperial County, CACA181,4110.0%–

SHOWING 1–47 OF 47

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