Ranking of Illinois Counties By Percentage of Population with Australian Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 3.00K people in Illinois with Australian ancestry (0.02% of Illinois population). Among all Illinois counties, Mason County had the highest percentage of its population with Australian ancestry (0.24%), followed by Douglas County (0.12%), and DeKalb County (0.09%).
The chart and table below shows the top 10 counties with high percentage of its population having Australian ancestry.
You can see similar information for other states and for other ancestry groups in Illinois.
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Related Topics: Illinois ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Illinois Counties By Percentage of Population with Australian Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Mason County | 0.24 |
| 2 | Douglas County | 0.12 |
| 3 | DeKalb County | 0.09 |
| 4 | Moultrie County | 0.08 |
| 5 | Christian County | 0.07 |
| 5 | Iroquois County | 0.07 |
| 6 | Edwards County | 0.06 |
| 6 | Knox County | 0.06 |
| 7 | Lake County | 0.04 |
| 7 | Peoria County | 0.04 |
| 8 | Clinton County | 0.03 |
| 8 | Cook County | 0.03 |
| 8 | Sangamon County | 0.03 |
| 8 | Vermilion County | 0.03 |
| 9 | DuPage County | 0.02 |
| 9 | Kane County | 0.02 |
| 9 | McLean County | 0.02 |
| 9 | St. Clair County | 0.02 |
| 9 | Tazewell County | 0.02 |
| 9 | Wabash County | 0.02 |
| 9 | Whiteside County | 0.02 |
| 10 | Bureau County | 0.01 |
| 10 | Champaign County | 0.01 |
| 10 | Henry County | 0.01 |
| 10 | Jefferson County | 0.01 |
| 10 | Kankakee County | 0.01 |
| 10 | Lee County | 0.01 |
| 10 | Macon County | 0.01 |
| 10 | Madison County | 0.01 |
| 10 | Marshall County | 0.01 |
| 10 | Morgan County | 0.01 |
| 10 | Rock Island County | 0.01 |
| 10 | Will County | 0.01 |
| 11 | Grundy County | 0.004 |
| 12 | Effingham County | 0.003 |
| 12 | Kendall County | 0.003 |
| 12 | LaSalle County | 0.003 |
| 12 | Winnebago County | 0.003 |
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