RANKING · 2024 ACS · 49 SHOWN OF 49

Highest Australian population share, California counties

California counties ranked by the share of all residents who are Australian ancestry (2024 American Community Survey). A concentration measure: Australian residents as a percentage of total population. This list covers the 49 counties in California that qualify, ranked against each other statewide.

Australian Americans: full group profile →

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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 Australian population share by state

RANKPLACESTATEPOPAUSTRALIAN SHAREVS 2010

01Mariposa County, CACA16,9180.5%–

02Inyo County, CACA18,1580.3%–

03Marin County, CACA253,6940.2%+0.0 pts

04San Francisco County, CACA826,0790.2%+0.0 pts

05Tehama County, CACA64,6650.2%+0.0 pts

06Nevada County, CACA101,9110.2%+0.1 pts

07San Luis Obispo County, CACA282,3670.1%+0.0 pts

08El Dorado County, CACA192,3230.1%+0.1 pts

09Yolo County, CACA224,4100.1%−0.1 pts

10Santa Cruz County, CACA258,8520.1%+0.0 pts

11Santa Clara County, CACA1,914,3910.1%+0.0 pts

12Santa Barbara County, CACA442,0650.1%−0.0 pts

13Ventura County, CACA830,8510.1%+0.0 pts

14Merced County, CACA297,2600.1%+0.1 pts

15Napa County, CACA132,9490.1%+0.0 pts

16Tuolumne County, CACA53,1600.1%+0.0 pts

17Calaveras County, CACA46,6050.1%−0.2 pts

18San Mateo County, CACA743,5680.1%−0.0 pts

19Amador County, CACA41,8760.1%−0.1 pts

20Sonoma County, CACA486,4440.1%−0.0 pts

21Contra Costa County, CACA1,170,0700.1%−0.0 pts

22San Diego County, CACA3,282,2480.1%−0.0 pts

23Los Angeles County, CACA9,694,9340.0%+0.0 pts

24Modoc County, CACA8,4260.0%–

25Alameda County, CACA1,636,6300.0%+0.0 pts

26San Joaquin County, CACA823,8150.0%+0.0 pts

27Lassen County, CACA28,1170.0%–

28Orange County, CACA3,149,5070.0%−0.0 pts

29Placer County, CACA442,0810.0%−0.1 pts

30Shasta County, CACA181,6480.0%−0.1 pts

31Mendocino County, CACA88,1220.0%−0.1 pts

32Butte County, CACA209,2110.0%−0.0 pts

33Riverside County, CACA2,544,9160.0%−0.0 pts

34Sacramento County, CACA1,618,4600.0%−0.0 pts

35San Bernardino County, CACA2,224,0910.0%−0.0 pts

36Monterey County, CACA433,7290.0%−0.0 pts

37Sutter County, CACA98,7870.0%–

38Stanislaus County, CACA557,7190.0%−0.0 pts

39Kern County, CACA927,0680.0%−0.0 pts

40Humboldt County, CACA131,6470.0%−0.0 pts

41Glenn County, CACA28,1410.0%−0.0 pts

42Fresno County, CACA1,035,4560.0%+0.0 pts

43Siskiyou County, CACA42,0130.0%−0.0 pts

44San Benito County, CACA70,0820.0%−0.1 pts

45Tulare County, CACA485,1460.0%−0.0 pts

46Solano County, CACA455,3760.0%−0.0 pts

47Kings County, CACA154,3270.0%−0.0 pts

48Madera County, CACA167,9270.0%−0.0 pts

49Lake County, CACA67,7720.0%−0.3 pts

SHOWING 1–49 OF 49

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES