RANKING · 2010 CENSUS · 34 SHOWN OF 34

Largest Australian population, Iowa counties · 2010

Iowa counties ranked by the number of residents who are Australian ancestry, from the 2010 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 34 counties in Iowa that qualify, ranked against each other statewide. The median across all 34 is 11.

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

Largest Australian population by state

RANKPLACESTATEPOPAUSTRALIAN POPULATIONVS –

01Polk County, IAIA516,546166–

02Scott County, IAIA175,25982–

03O'Brien County, IAIA14,22075–

04Jefferson County, IAIA15,29152–

05Woodbury County, IAIA106,64952–

06Cerro Gordo County, IAIA42,37246–

07Monona County, IAIA8,53944–

08Warren County, IAIA57,33141–

09Sioux County, IAIA36,77433–

10Linn County, IAIA232,02822–

11Johnson County, IAIA160,04421–

12Bremer County, IAIA25,29620–

13Carroll County, IAIA20,30318–

14Des Moines County, IAIA38,07713–

15Franklin County, IAIA9,86812–

16Pottawattamie County, IAIA92,99612–

17Calhoun County, IAIA9,56211–

18Wapello County, IAIA35,21011–

19Lee County, IAIA32,30610–

20Poweshiek County, IAIA18,36810–

21Cherokee County, IAIA11,3699–

22Fremont County, IAIA6,5228–

23Story County, IAIA101,2918–

24Van Buren County, IAIA7,1318–

25Buena Vista County, IAIA20,4497–

26Clay County, IAIA16,2027–

27Marion County, IAIA34,1927–

28Henry County, IAIA19,3495–

29Worth County, IAIA7,3385–

30Decatur County, IAIA7,6554–

31Hardin County, IAIA16,4553–

32Pocahontas County, IAIA6,8193–

33Cass County, IAIA12,9602–

34Tama County, IAIA16,7962–

SHOWING 1–34 OF 34

Download CSV (full list, 34 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS