Iowa Citizen Voting-age Population By County in 2013 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2013, the citizen voting-age population for Iowa was 2,262,520 and represented 73.88% of the total Iowa population.
Among all Iowa counties, Polk had the highest citizen voting-age population (307.43K), followed by Linn (158.65K), and Scott (123.97K).
In terms of percentages, Dickinson had the highest percentage of its population being citizens of voting-age (80.23%), followed by Calhoun (79.50%), and Adams (79.12%).
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 | 307425 | 70.14 |
| Linn | 158650 | 74.33 |
| Scott | 123965 | 74.19 |
| Johnson | 100200 | 74.76 |
| Black Hawk | 99995 | 76.06 |
| Dubuque | 71475 | 75.71 |
| Woodbury | 70165 | 68.69 |
| Story | 69750 | 76.86 |
| Pottawattamie | 69010 | 74.24 |
| Dallas | 47010 | 67.62 |
| Clinton | 37160 | 76.00 |
| Warren | 34555 | 74.11 |
| Cerro Gordo | 34125 | 77.68 |
| Des Moines | 30745 | 76.29 |
| Muscatine | 30455 | 71.16 |
| Webster | 28840 | 76.65 |
| Jasper | 28305 | 77.10 |
| Lee | 27610 | 77.26 |
| Marshall | 27045 | 66.29 |
| Wapello | 26020 | 73.36 |
| Marion | 24855 | 74.60 |
| Sioux | 23530 | 69.10 |
| Boone | 20005 | 76.04 |
| Benton | 19285 | 74.26 |
| Bremer | 18870 | 77.38 |
| Plymouth | 18305 | 73.44 |
| Mahaska | 16945 | 75.55 |
| Winneshiek | 16555 | 78.68 |
| Washington | 16140 | 73.92 |
| Fayette | 16075 | 77.21 |
| Jones | 16000 | 77.54 |
| Carroll | 15625 | 75.37 |
| Buchanan | 15275 | 72.89 |
| Henry | 15275 | 75.66 |
| Jackson | 15185 | 76.94 |
| Poweshiek | 14590 | 77.59 |
| Cedar | 13945 | 75.58 |
| Clayton | 13750 | 76.43 |
| Dickinson | 13495 | 80.23 |
| Buena Vista | 13230 | 65.01 |
| Delaware | 13205 | 74.75 |
| Hardin | 13195 | 75.59 |
| Tama | 12915 | 73.13 |
| Clay | 12645 | 76.15 |
| Iowa | 12365 | 75.74 |
| Page | 12295 | 77.62 |
| Floyd | 12255 | 75.77 |
| Jefferson | 12160 | 72.38 |
| Kossuth | 11940 | 77.36 |
| Hamilton | 11615 | 75.01 |
| Madison | 11375 | 72.89 |
| Butler | 11340 | 76.06 |
| Harrison | 11185 | 75.93 |
| Crawford | 11180 | 64.98 |
| Mills | 11170 | 74.54 |
| O'Brien | 10695 | 75.05 |
| Allamakee | 10620 | 74.58 |
| Cass | 10580 | 76.69 |
| Appanoose | 9930 | 77.52 |
| Wright | 9610 | 73.42 |
| Union | 9495 | 75.69 |
| Grundy | 9435 | 76.00 |
| Cherokee | 9410 | 78.32 |
| Chickasaw | 9315 | 75.24 |
| Shelby | 9185 | 75.97 |
| Hancock | 8525 | 75.81 |
| Lyon | 8295 | 71.14 |
| Guthrie | 8250 | 76.07 |
| Winnebago | 8240 | 76.79 |
| Mitchell | 8115 | 75.56 |
| Montgomery | 8105 | 76.28 |
| Keokuk | 7960 | 76.32 |
| Louisa | 7945 | 70.00 |
| Calhoun | 7910 | 79.50 |
| Sac | 7870 | 76.97 |
| Franklin | 7710 | 72.57 |
| Emmet | 7515 | 74.11 |
| Humboldt | 7340 | 75.09 |
| Palo Alto | 7190 | 76.90 |
| Howard | 7125 | 74.53 |
| Monona | 7125 | 77.36 |
| Greene | 7070 | 76.39 |
| Clarke | 6690 | 71.86 |
| Lucas | 6395 | 72.34 |
| Decatur | 6350 | 76.41 |
| Davis | 6180 | 70.59 |
| Monroe | 5960 | 74.41 |
| Adair | 5890 | 77.60 |
| Worth | 5820 | 76.98 |
| Van Buren | 5790 | 77.05 |
| Pocahontas | 5620 | 77.57 |
| Fremont | 5610 | 76.96 |
| Ida | 5400 | 76.06 |
| Wayne | 4870 | 76.33 |
| Audubon | 4710 | 78.50 |
| Osceola | 4700 | 74.19 |
| Taylor | 4675 | 74.74 |
| Ringgold | 3855 | 75.51 |
| Adams | 3145 | 79.12 |
