RANKING · 2020 CENSUS · 49 SHOWN OF 49

Highest Iranian population share, California counties · 2020

California counties ranked by the share of all residents who are Iranian ancestry (2020 American Community Survey). A concentration measure: Iranian residents as a percentage of total population. This list covers the 49 counties in California that qualify, ranked against each other statewide.

Iranian Americans: full group profile →

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SAME RANKING BYCities States Metros

YEAR2010 2020 2024

Highest Iranian population share by state

RANKPLACESTATEPOPIRANIAN SHAREVS 2010

01Orange County, CACA3,149,5071.0%−0.0 pts

02Santa Clara County, CACA1,914,3911.0%+0.1 pts

03Los Angeles County, CACA9,694,9340.9%−0.1 pts

04Contra Costa County, CACA1,170,0700.7%−0.0 pts

05San Mateo County, CACA743,5680.7%+0.0 pts

06Marin County, CACA253,6940.7%−0.3 pts

07San Diego County, CACA3,282,2480.5%+0.1 pts

08Placer County, CACA442,0810.5%−0.1 pts

09Yolo County, CACA224,4100.4%+0.0 pts

10San Francisco County, CACA826,0790.4%+0.1 pts

11Alameda County, CACA1,636,6300.4%−0.0 pts

12Stanislaus County, CACA557,7190.4%+0.1 pts

13Ventura County, CACA830,8510.4%−0.1 pts

14Santa Cruz County, CACA258,8520.3%+0.1 pts

15Sacramento County, CACA1,618,4600.3%+0.0 pts

16Santa Barbara County, CACA442,0650.3%+0.0 pts

17El Dorado County, CACA192,3230.2%−0.1 pts

18San Luis Obispo County, CACA282,3670.2%+0.1 pts

19Sonoma County, CACA486,4440.2%−0.1 pts

20Riverside County, CACA2,544,9160.2%−0.0 pts

21Napa County, CACA132,9490.2%+0.1 pts

22Fresno County, CACA1,035,4560.2%−0.0 pts

23Sutter County, CACA98,7870.1%+0.1 pts

24Humboldt County, CACA131,6470.1%+0.1 pts

25San Joaquin County, CACA823,8150.1%−0.0 pts

26Shasta County, CACA181,6480.1%+0.0 pts

27Yuba County, CACA88,6910.1%–

28Mono County, CACA12,5050.1%−0.0 pts

29San Bernardino County, CACA2,224,0910.1%−0.1 pts

30San Benito County, CACA70,0820.1%−0.1 pts

31Tuolumne County, CACA53,1600.1%+0.0 pts

32Solano County, CACA455,3760.1%−0.1 pts

33Merced County, CACA297,2600.1%−0.0 pts

34Lake County, CACA67,7720.1%+0.0 pts

35Monterey County, CACA433,7290.1%+0.0 pts

36Mendocino County, CACA88,1220.1%−0.0 pts

37Imperial County, CACA181,4110.1%–

38Kern County, CACA927,0680.1%−0.0 pts

39Del Norte County, CACA26,4100.1%−0.3 pts

40Butte County, CACA209,2110.0%−0.1 pts

41Kings County, CACA154,3270.0%+0.0 pts

42Siskiyou County, CACA42,0130.0%−0.2 pts

43Inyo County, CACA18,1580.0%–

44Amador County, CACA41,8760.0%−0.2 pts

45Lassen County, CACA28,1170.0%−0.2 pts

46Trinity County, CACA15,7200.0%−0.7 pts

47Madera County, CACA167,9270.0%−0.0 pts

48Nevada County, CACA101,9110.0%−0.1 pts

49Tulare County, CACA485,1460.0%−0.0 pts

SHOWING 1–49 OF 49

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS