Ranking of Illinois Counties By Voting-age Population Percentage from Census 2020
Updated on August 22, 2023.
According to the data from the US 2020 Census, as at April 2020, Johnson County had the highest voting-age population percentage in Illinois (82.64%), followed by Brown County (82.58%), and Carroll County (81.97%).
The chart below shows the top 10 counties with high voting-age population percentage, and the table below shows the ranking of all Illinois counties based on the percentage of the population that were in the voting-age (18 years and over) group.
You can also see the ranking of counties by population for other states as well as for the whole United States.
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Related Topics: Illinois Census 2020 Topic List.
Data Source: US Census Bureau, 2020 Census.
Ranking of Illinois Counties By Voting-age Population Percentage from Census 2020
Rank | County | % of County Voting-age Population |
|---|---|---|
| 1 | Johnson County | 82.64 |
| 2 | Brown County | 82.58 |
| 3 | Carroll County | 81.97 |
| 4 | McDonough County | 81.83 |
| 5 | Hardin County | 81.80 |
| 6 | Bond County | 81.76 |
| 7 | Pope County | 81.53 |
| 8 | Schuyler County | 81.44 |
| 9 | Henderson County | 81.18 |
| 10 | Alexander County | 80.88 |
| 11 | Champaign County | 80.84 |
| 12 | Jo Daviess County | 80.83 |
| 13 | Putnam County | 80.81 |
| 14 | Lawrence County | 80.72 |
| 15 | Jackson County | 80.69 |
| 16 | Perry County | 80.56 |
| 17 | Logan County | 80.53 |
| 18 | Coles County | 80.50 |
| 19 | Fulton County | 80.26 |
| 19 | Lee County | 80.26 |
| 19 | Morgan County | 80.26 |
| 20 | Randolph County | 80.23 |
| 21 | Knox County | 80.11 |
| 22 | Christian County | 79.98 |
| 23 | Crawford County | 79.72 |
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