Iowa Citizen Voting-age Population By County in 2022 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2022, the citizen voting-age population for Iowa was 2,368,945 and represented 74.29% of the total Iowa population.
Among all Iowa counties, Polk had the highest citizen voting-age population (350.70K), followed by Linn (171.81K), and Scott (130.24K).
In terms of percentages, Page had the highest percentage of its population being citizens of voting-age (80.49%), followed by Winneshiek (80.22%), and Hardin (79.33%).
The chart and table below shows the citizen voting-age population of each county and the percentage of each county's population that were citizens of voting-age.
You can see similar information for other states and by state for the United States.
| County | Citizen Voting-age Population | % of County Population |
|---|---|---|
| Polk | 350695 | 71.08 |
| Linn | 171810 | 74.93 |
| Scott | 130235 | 74.71 |
| Johnson | 113510 | 74.02 |
| Black Hawk | 98845 | 75.43 |
| Story | 77110 | 78.22 |
| Dubuque | 74915 | 75.82 |
| Woodbury | 73210 | 69.38 |
| Pottawattamie | 69865 | 74.69 |
| Dallas | 69665 | 69.41 |
| Warren | 39515 | 74.97 |
| Clinton | 35605 | 76.59 |
| Cerro Gordo | 33700 | 78.41 |
| Muscatine | 30935 | 71.99 |
| Des Moines | 29590 | 76.21 |
| Jasper | 29050 | 76.83 |
| Webster | 28585 | 77.29 |
| Marshall | 26960 | 67.32 |
| Lee | 26160 | 78.23 |
| Marion | 25455 | 76.02 |
| Wapello | 25400 | 71.97 |
| Sioux | 25090 | 70.05 |
| Boone | 21000 | 78.65 |
| Benton | 19675 | 76.71 |
| Bremer | 19250 | 76.97 |
| Plymouth | 18645 | 72.78 |
| Mahaska | 16660 | 75.52 |
| Washington | 16575 | 73.55 |
| Jones | 16355 | 78.88 |
| Winneshiek | 16085 | 80.22 |
| Henry | 15840 | 77.51 |
| Carroll | 15545 | 74.99 |
| Buchanan | 15165 | 73.51 |
| Fayette | 15140 | 77.56 |
| Jackson | 15105 | 77.58 |
| Poweshiek | 14475 | 77.78 |
| Cedar | 14320 | 77.49 |
| Dickinson | 14010 | 79.20 |
| Hardin | 13375 | 79.33 |
| Delaware | 13335 | 76.09 |
| Clayton | 13300 | 77.66 |
| Buena Vista | 12855 | 62.15 |
| Iowa | 12590 | 75.96 |
| Clay | 12550 | 76.41 |
| Madison | 12440 | 74.90 |
| Tama | 12400 | 72.88 |
| Page | 12255 | 80.49 |
| Floyd | 12010 | 76.99 |
| Jefferson | 11855 | 75.10 |
| Kossuth | 11250 | 76.43 |
| Harrison | 11220 | 76.72 |
| Hamilton | 11190 | 74.70 |
| Crawford | 11130 | 67.66 |
| Butler | 11000 | 76.52 |
| Mills | 10985 | 75.21 |
| O'Brien | 10475 | 74.08 |
| Allamakee | 10330 | 73.55 |
| Cass | 10175 | 77.58 |
| Appanoose | 9510 | 77.44 |
| Grundy | 9345 | 75.67 |
| Wright | 9285 | 72.01 |
| Union | 9140 | 75.51 |
| Chickasaw | 9045 | 75.66 |
| Shelby | 9025 | 76.91 |
| Cherokee | 9020 | 77.76 |
| Lyon | 8525 | 70.89 |
| Hancock | 8380 | 77.67 |
| Winnebago | 8290 | 77.44 |
| Guthrie | 8185 | 77.07 |
| Montgomery | 7955 | 77.35 |
| Mitchell | 7935 | 75.32 |
| Louisa | 7855 | 72.56 |
| Calhoun | 7710 | 77.92 |
| Keokuk | 7670 | 76.51 |
| Sac | 7435 | 76.02 |
| Emmet | 7365 | 78.77 |
| Franklin | 7255 | 72.44 |
| Humboldt | 7180 | 74.75 |
| Clarke | 7020 | 72.11 |
| Howard | 6980 | 73.63 |
| Greene | 6820 | 77.50 |
| Monona | 6760 | 77.97 |
| Palo Alto | 6745 | 75.45 |
| Lucas | 6605 | 76.23 |
| Davis | 6355 | 69.87 |
| Decatur | 5860 | 76.25 |
| Worth | 5860 | 79.03 |
| Adair | 5800 | 77.54 |
| Monroe | 5770 | 76.17 |
| Van Buren | 5530 | 76.75 |
| Pocahontas | 5360 | 75.92 |
| Ida | 5240 | 75.18 |
| Fremont | 5130 | 77.26 |
| Wayne | 4765 | 73.48 |
| Osceola | 4580 | 74.47 |
| Audubon | 4375 | 77.43 |
| Taylor | 4375 | 73.96 |
| Ringgold | 3535 | 75.37 |
| Adams | 2895 | 78.67 |
