Iowa Citizen Voting-age Population By County in 2010 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2010, the citizen voting-age population for Iowa was 2,222,850 and represented 73.69% of the total Iowa population.
Among all Iowa counties, Polk had the highest citizen voting-age population (294.64K), followed by Linn (153.39K), and Scott (119.25K).
In terms of percentages, Dickinson had the highest percentage of its population being citizens of voting-age (80.95%), followed by Adams (79.88%), and Calhoun (79.18%).
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 | 294635 | 70.27 |
| Linn | 153385 | 73.83 |
| Scott | 119245 | 73.52 |
| Black Hawk | 98175 | 75.96 |
| Johnson | 96170 | 75.73 |
| Woodbury | 69615 | 68.78 |
| Dubuque | 69490 | 75.09 |
| Pottawattamie | 67880 | 73.84 |
| Story | 67360 | 76.90 |
| Dallas | 41830 | 67.78 |
| Clinton | 37230 | 75.56 |
| Cerro Gordo | 34115 | 76.97 |
| Warren | 33325 | 73.49 |
| Des Moines | 30630 | 76.07 |
| Muscatine | 29580 | 69.60 |
| Webster | 29000 | 75.75 |
| Jasper | 28340 | 76.49 |
| Lee | 27510 | 76.44 |
| Marshall | 27350 | 68.15 |
| Wapello | 26555 | 74.69 |
| Marion | 24840 | 74.42 |
| Sioux | 23300 | 69.81 |
| Boone | 19985 | 75.63 |
| Benton | 19135 | 73.31 |
| Bremer | 18515 | 76.56 |
| Plymouth | 18220 | 73.07 |
| Mahaska | 16730 | 74.75 |
| Winneshiek | 16425 | 78.10 |
| Fayette | 16065 | 76.54 |
| Jones | 15915 | 76.85 |
| Washington | 15820 | 73.16 |
| Carroll | 15555 | 74.77 |
| Buchanan | 15235 | 72.46 |
| Jackson | 15210 | 76.28 |
| Poweshiek | 14735 | 77.51 |
| Henry | 14600 | 72.05 |
| Cedar | 13840 | 75.16 |
| Clayton | 13735 | 75.47 |
| Dickinson | 13490 | 80.95 |
| Hardin | 13340 | 75.43 |
| Delaware | 13255 | 74.24 |
| Tama | 12960 | 72.20 |
| Buena Vista | 12955 | 64.84 |
| Clay | 12655 | 75.69 |
| Page | 12465 | 77.45 |
| Iowa | 12275 | 75.05 |
| Floyd | 12250 | 74.72 |
| Jefferson | 12130 | 72.88 |
| Kossuth | 12080 | 76.70 |
| Hamilton | 11790 | 74.27 |
| Butler | 11405 | 76.60 |
| Harrison | 11350 | 75.29 |
| Madison | 11250 | 72.63 |
| Mills | 11245 | 74.20 |
| Crawford | 11205 | 66.11 |
| O'Brien | 10860 | 75.31 |
| Cass | 10710 | 76.66 |
| Allamakee | 10450 | 72.92 |
| Appanoose | 9965 | 76.48 |
| Wright | 9890 | 73.89 |
| Cherokee | 9480 | 78.44 |
| Union | 9435 | 76.03 |
| Grundy | 9400 | 75.81 |
| Chickasaw | 9390 | 75.12 |
| Shelby | 9355 | 75.87 |
| Hancock | 8665 | 75.32 |
| Winnebago | 8360 | 76.28 |
| Lyon | 8350 | 72.20 |
| Guthrie | 8330 | 75.45 |
| Montgomery | 8205 | 75.28 |
| Mitchell | 8050 | 74.54 |
| Keokuk | 8020 | 75.55 |
| Louisa | 7990 | 68.38 |
| Sac | 7990 | 76.24 |
| Franklin | 7815 | 73.07 |
| Calhoun | 7795 | 79.18 |
| Emmet | 7725 | 74.35 |
| Humboldt | 7470 | 75.42 |
| Palo Alto | 7365 | 77.44 |
| Monona | 7190 | 76.94 |
| Greene | 7180 | 75.98 |
| Howard | 7145 | 74.35 |
| Lucas | 6715 | 73.67 |
| Clarke | 6535 | 70.88 |
| Decatur | 6400 | 75.21 |
| Davis | 6185 | 71.22 |
| Monroe | 5980 | 75.51 |
| Adair | 5940 | 76.35 |
| Van Buren | 5870 | 76.78 |
| Pocahontas | 5835 | 77.70 |
| Worth | 5830 | 76.41 |
| Fremont | 5745 | 76.30 |
| Ida | 5445 | 75.94 |
| Wayne | 4885 | 76.27 |
| Osceola | 4825 | 73.38 |
| Audubon | 4760 | 76.96 |
| Taylor | 4755 | 74.30 |
| Ringgold | 3885 | 75.15 |
| Adams | 3295 | 79.88 |
