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. The median across all 49 is 0.0%. Biggest climber in the top 100 since 2020: Merced County, CA, up 26 places to #14.

Australian Americans: full group profile →

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SAME RANKING BYCities States Metros

YEAR2010 2020 2024

Highest Australian population share by state

RANKPLACESTATEPOPAUSTRALIAN SHAREVS 2010

01Mariposa County, CACA16,9180.5%–

02Inyo County, CACA18,1580.3%–

03▲3Marin County, CACA253,6940.2%0.0 pts

04▼2San Francisco County, CACA826,0790.2%0.0 pts

05▼4Tehama County, CACA64,6650.2%0.0 pts

06▼2Nevada County, CACA101,9110.2%+0.1 pts

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

08▼5El Dorado County, CACA192,3230.1%+0.1 pts

09▼1Yolo County, CACA224,4100.1%−0.1 pts

10▲13Santa Cruz County, CACA258,8520.1%0.0 pts

11▲8Santa Clara County, CACA1,914,3910.1%0.0 pts

12▲1Santa Barbara County, CACA442,0650.1%0.0 pts

13▲5Ventura County, CACA830,8510.1%0.0 pts

14▲26Merced County, CACA297,2600.1%+0.1 pts

15▼3Napa County, CACA132,9490.1%0.0 pts

16▼1Tuolumne County, CACA53,1600.1%0.0 pts

17▲22Calaveras County, CACA46,6050.1%−0.2 pts

18▼2San Mateo County, CACA743,5680.1%0.0 pts

19▼14Amador County, CACA41,8760.1%−0.1 pts

20▼9Sonoma County, CACA486,4440.1%0.0 pts

21▼12Contra Costa County, CACA1,170,0700.1%0.0 pts

22▲6San Diego County, CACA3,282,2480.1%0.0 pts

23▼3Los Angeles County, CACA9,694,9340.0%0.0 pts

24Modoc County, CACA8,4260.0%–

25▼1Alameda County, CACA1,636,6300.0%0.0 pts

26▲4San Joaquin County, CACA823,8150.0%0.0 pts

27▼10Lassen County, CACA28,1170.0%–

28▼6Orange County, CACA3,149,5070.0%0.0 pts

29▼19Placer County, CACA442,0810.0%−0.1 pts

30▼5Shasta County, CACA181,6480.0%−0.1 pts

31▲6Mendocino County, CACA88,1220.0%−0.1 pts

32▼11Butte County, CACA209,2110.0%0.0 pts

33▼7Riverside County, CACA2,544,9160.0%0.0 pts

34▼7Sacramento County, CACA1,618,4600.0%0.0 pts

35▼6San Bernardino County, CACA2,224,0910.0%0.0 pts

36▼5Monterey County, CACA433,7290.0%0.0 pts

37▲6Sutter County, CACA98,7870.0%–

38▼4Stanislaus County, CACA557,7190.0%0.0 pts

39▲5Kern County, CACA927,0680.0%0.0 pts

40▼5Humboldt County, CACA131,6470.0%0.0 pts

41▼8Glenn County, CACA28,1410.0%0.0 pts

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

43▼29Siskiyou County, CACA42,0130.0%0.0 pts

44▲3San Benito County, CACA70,0820.0%−0.1 pts

45▼7Tulare County, CACA485,1460.0%0.0 pts

46▼10Solano County, CACA455,3760.0%0.0 pts

47▲1Kings County, CACA154,3270.0%0.0 pts

48▼3Madera County, CACA167,9270.0%0.0 pts

49▼8Lake County, CACA67,7720.0%−0.3 pts

SHOWING 1–49 OF 49

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