Ranking of Iowa 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, Story County had the highest voting-age population percentage in Iowa (83.25%), followed by Jefferson County (81.24%), and Dickinson County (80.96%).
The chart below shows the top 10 counties with high voting-age population percentage, and the table below shows the ranking of all Iowa 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: Iowa Census 2020 Topic List.
Data Source: US Census Bureau, 2020 Census.
Ranking of Iowa Counties By Voting-age Population Percentage from Census 2020
Rank | County | % of County Voting-age Population |
|---|---|---|
| 1 | Story County | 83.25 |
| 2 | Jefferson County | 81.24 |
| 3 | Dickinson County | 80.96 |
| 4 | Winneshiek County | 80.75 |
| 5 | Poweshiek County | 80.58 |
| 6 | Johnson County | 79.87 |
| 7 | Cerro Gordo County | 79.83 |
| 8 | Winnebago County | 79.34 |
| 9 | Page County | 79.03 |
| 10 | Henry County | 78.93 |
| 10 | Webster County | 78.93 |
| 11 | Lee County | 78.67 |
| 12 | Jones County | 78.65 |
| 13 | Calhoun County | 78.63 |
| 14 | Kossuth County | 78.59 |
| 15 | Fayette County | 78.48 |
| 16 | Cherokee County | 78.33 |
| 17 | Jackson County | 78.29 |
| 18 | Clayton County | 78.27 |
| 19 | Des Moines County | 78.24 |
| 20 | Audubon County | 78.20 |
| 21 | Black Hawk County | 78.18 |
| 22 | Emmet County | 78.08 |
| 23 | Adams County | 78.05 |
| 23 | Montgomery County | 78.05 |
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