Ranking of Iowa Counties By Population with Australian Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 598 people in Iowa with Australian ancestry. Among all Iowa counties, Polk County had the highest population with Australian ancestry (79), followed by Pottawattamie County (79), and Johnson County (69).
The chart and table below shows the top 10 counties with high number of people with Australian ancestry.
You can see similar information for other states and for other ancestry groups in Iowa.
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Related Topics: Iowa ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Iowa Counties By Population with Australian Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Polk County | 79 |
| 1 | Pottawattamie County | 79 |
| 2 | Johnson County | 69 |
| 3 | Warren County | 63 |
| 4 | Webster County | 38 |
| 5 | Mitchell County | 37 |
| 6 | Muscatine County | 34 |
| 7 | Hardin County | 27 |
| 8 | Emmet County | 26 |
| 9 | Story County | 23 |
| 10 | Dallas County | 22 |
| 11 | Jasper County | 15 |
| 12 | Poweshiek County | 13 |
| 13 | Des Moines County | 11 |
| 13 | Sioux County | 11 |
| 14 | Black Hawk County | 8 |
| 14 | Scott County | 8 |
| 15 | Worth County | 7 |
| 16 | Lucas County | 6 |
| 16 | Plymouth County | 6 |
| 17 | Cerro Gordo County | 5 |
| 17 | Decatur County | 5 |
| 18 | Clay County | 2 |
| 18 | O'Brien County | 2 |
| 19 | Dickinson County | 1 |
| 19 | Henry County | 1 |
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