RANKING · 2020 CENSUS · 48 SHOWN OF 48

Largest Australian population, California counties · 2020

California counties ranked by the number of residents who are Australian ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 48 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

Largest Australian population by state

RANKPLACESTATEPOPAUSTRALIAN POPULATIONVS 2010

01Los Angeles County, CACA9,694,9346,025+33%

02Orange County, CACA3,149,5071,772+4%

03San Diego County, CACA3,282,2481,416−32%

04San Francisco County, CACA826,0791,205+26%

05Riverside County, CACA2,544,9161,172+34%

06Santa Clara County, CACA1,914,3911,170+114%

07Contra Costa County, CACA1,170,070948+28%

08San Bernardino County, CACA2,224,091861+0%

09Alameda County, CACA1,636,630840+48%

10Sacramento County, CACA1,618,460687−10%

11Ventura County, CACA830,851515+34%

12San Mateo County, CACA743,568476−1%

13Sonoma County, CACA486,444367−16%

14Placer County, CACA442,081321−2%

15Santa Barbara County, CACA442,065318−27%

16San Joaquin County, CACA823,815299+52%

17San Luis Obispo County, CACA282,367280+26%

18Marin County, CACA253,694258−39%

19El Dorado County, CACA192,323236+307%

20Yolo County, CACA224,410196−56%

21Monterey County, CACA433,729166+4%

22Stanislaus County, CACA557,719164−1%

23Santa Cruz County, CACA258,852143−26%

24Butte County, CACA209,211129+7%

25Fresno County, CACA1,035,456122+213%

26Nevada County, CACA101,911116+40%

27Tehama County, CACA64,665110+55%

28Solano County, CACA455,376104−24%

29Napa County, CACA132,949102+28%

30Tulare County, CACA485,14695+30%

31Shasta County, CACA181,64887−57%

32Kern County, CACA927,06883−64%

33Merced County, CACA297,26053+61%

34Amador County, CACA41,87645+5%

35Tuolumne County, CACA53,16034+386%

36Humboldt County, CACA131,64733−55%

37Siskiyou County, CACA42,01328+87%

38Lassen County, CACA28,11719–

39Mendocino County, CACA88,12219−84%

40Lake County, CACA67,77212−93%

41Sutter County, CACA98,78710–

42Glenn County, CACA28,14110−41%

43Calaveras County, CACA46,6059−93%

44Colusa County, CACA21,8368–

45Madera County, CACA167,9276−88%

46Kings County, CACA154,3272−96%

47Yuba County, CACA88,6912−98%

48San Benito County, CACA70,0821−99%

SHOWING 1–48 OF 48

Download CSV (full list, 48 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS