RANKING · 2024 ACS · 47 SHOWN OF 47

Largest Iranian population, California counties

California counties ranked by the number of residents who are Iranian ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 47 counties in California that qualify, ranked against each other statewide. The median across all 47 is 492. Biggest climber in the top 100 since 2020: Lassen County, CA, up 11 places to #36.

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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

RANKPLACESTATEPOPIRANIAN POPULATIONVS 2010

01Los Angeles County, CACA9,694,93486,430−6%

02Orange County, CACA3,149,50739,737+30%

03Santa Clara County, CACA1,914,39120,620+31%

04San Diego County, CACA3,282,24817,138+30%

05Contra Costa County, CACA1,170,0708,957+24%

06Alameda County, CACA1,636,6307,886+30%

07▲1Sacramento County, CACA1,618,4605,794+40%

08▼1San Mateo County, CACA743,5685,061+7%

09▲2Ventura County, CACA830,8515,003+27%

10▼1Riverside County, CACA2,544,9164,533+27%

11▼1San Francisco County, CACA826,0793,905+73%

12San Bernardino County, CACA2,224,0912,764−24%

13▲2Marin County, CACA253,6942,2470%

14Placer County, CACA442,0811,822+5%

15▲2Santa Barbara County, CACA442,0651,497+49%

16▲2San Joaquin County, CACA823,8151,383+43%

17▼1Fresno County, CACA1,035,4561,056−24%

18▼5Stanislaus County, CACA557,7191,027−23%

19▲2Sonoma County, CACA486,444872−23%

20Santa Cruz County, CACA258,852864+75%

21▼2Yolo County, CACA224,410803+2%

22▲2El Dorado County, CACA192,323615−5%

23▲3Monterey County, CACA433,729593+98%

24▲1Solano County, CACA455,376492−41%

25▼3San Luis Obispo County, CACA282,367478+64%

26▼3Kern County, CACA927,068417−42%

27▲8Tulare County, CACA485,146374+98%

28▼1Merced County, CACA297,260293−5%

29Napa County, CACA132,949236+129%

30▼2Shasta County, CACA181,648228+21%

31▲3Butte County, CACA209,211166−26%

32▲9Madera County, CACA167,927137+198%

33▼3Humboldt County, CACA131,647103−5%

34▲8Nevada County, CACA101,91167−7%

35▲5Lake County, CACA67,77259+11%

36▲11Lassen County, CACA28,11759−16%

37▼4Yuba County, CACA88,69149–

38▲1Kings County, CACA154,32746+5%

39▼8Sutter County, CACA98,78741−33%

40▼2Mendocino County, CACA88,12234−60%

41▲4Del Norte County, CACA26,41014−85%

42▼10Imperial County, CACA181,41113–

43▲1Siskiyou County, CACA42,01313−88%

44Mariposa County, CACA16,918120%

45▼8Tuolumne County, CACA53,16010−70%

46Calaveras County, CACA46,6056–

47Plumas County, CACA18,5835–

SHOWING 1–47 OF 47

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES