| County | City Pop. | City | % Correct |
|---|---|---|---|
| Polk | 212,031 | Des Moines | 97%
|
| Linn | 136,467 | Cedar Rapids | 91%
|
| Dubuque | 59,119 | Dubuque | 91%
|
| Woodbury | 85,617 | Sioux City | 91%
|
| Black Hawk | 66,941 | Waterloo | 91%
|
| Pottawattamie | 62,415 | Council Bluffs | 88%
|
| Scott | 101,009 | Davenport | 88%
|
| Hardin | 5,063 | Iowa City | 88%
|
| Johnson | 74,596 | Iowa City | 88%
|
| Story | 66,424 | Ames | 84%
|
| Clinton | 24,434 | Clinton | 75%
|
| Cerro Gordo | 27,138 | Mason City | 75%
|
| Muscatine | 23,474 | Muscatine | 75%
|
| Marshall | 27,388 | Marshalltown | 72%
|
| Boone | 12,469 | Boone | 69%
|
| Des Moines | 23,713 | Burlington | 69%
|
| Carroll | 10,224 | Carroll | 69%
|
| Webster | 24,912 | Fort Dodge | 66%
|
| Wapello | 25,350 | Ottumwa | 66%
|
| Winneshiek | 7,747 | Decorah | 63%
|
| Greene | 4,136 | Jefferson | 59%
|
| Clay | 11,356 | Spencer | 59%
|
| Tama | 3,069 | Tama | 59%
|
| Poweshiek | 9,513 | Grinnell | 56%
|
| Jasper | 15,667 | Newton | 56%
|
| Mahaska | 11,536 | Oskaloosa | 56%
|
| Washington | 7,255 | Washington | 56%
|
| Audubon | 2,035 | Audubon | 53%
|
| Lee | 10,174 | Fort Madison | 53%
|
| Dallas | 26,495 | Waukee | 53%
|
| Floyd | 7,281 | Charles City | 50%
|
| Cherokee | 5,099 | Cherokee | 50%
|
| Warren | 15,747 | Indianola | 50%
|
| Clarke | 5,536 | Osceola | 50%
|
| Marion | 10,554 | Pella | 50%
|
| Bremer | 10,398 | Waverly | 50%
|
| Jefferson | 9,641 | Fairfield | 47%
|
| Buchanan | 6,166 | Independence | 47%
|
| Buena Vista | 11,256 | Storm Lake | 47%
|
| Cass | 6,758 | Atlantic | 44%
|
| Humboldt | 4,773 | Humboldt | 44%
|
| Plymouth | 10,572 | Le Mars | 44%
|
| Jackson | 6,068 | Maquoketa | 44%
|
| Sioux | 8,273 | Sioux Center | 44%
|
| Kossuth | 5,336 | Algona | 41%
|
| Union | 7,487 | Creston | 41%
|
| Henry | 8,982 | Mount Pleasant | 41%
|
| Hamilton | 7,751 | Webster City | 41%
|
| Crawford | 8,178 | Denison | 38%
|
| Palo Alto | 3,631 | Emmetsburg | 38%
|
| Pocahontas | 1,870 | Pocahontas | 38%
|
| Montgomery | 5,582 | Red Oak | 38%
|
| Louisa | 2,058 | Wapello | 38%
|
| Grundy | 2,797 | Grundy Center | 34%
|
| Delaware | 5,094 | Manchester | 34%
|
| Dickinson | 5,420 | Spirit Lake | 34%
|
| Jones | 5,350 | Anamosa | 31%
|
| Appanoose | 5,325 | Centerville | 31%
|
| Shelby | 4,912 | Harlan | 31%
|
| Ida | 2,045 | Ida Grove | 31%
|
| Decatur | 2,052 | Lamoni | 31%
|
| Monona | 2,850 | Onawa | 31%
|
| Lyon | 2,617 | Rock Rapids | 31%
|
| Sac | 2,041 | Sac City | 31%
|
| O'Brien | 5,428 | Sheldon | 31%
|
| Cedar | 3,120 | Tipton | 31%
|
| Monroe | 3,712 | Albia | 28%
|
| Lucas | 4,220 | Chariton | 28%
|
| Winnebago | 4,238 | Forest City | 28%
|
| Guthrie | 1,577 | Guthrie Center | 28%
|
| Fayette | 5,844 | Oelwein | 28%
|
| Mitchell | 3,570 | Osage | 28%
|
| Allamakee | 3,760 | Waukon | 28%
|
| Iowa | 3,364 | Williamsburg | 28%
|
| Madison | 5,385 | Winterset | 28%
|
| Page | 5,493 | Clarinda | 25%
|
| Emmet | 5,861 | Estherville | 25%
|
| Mills | 5,170 | Glenwood | 25%
|
| Clayton | 1,788 | Guttenberg | 25%
|
| Franklin | 4,307 | Hampton | 25%
|
| Harrison | 2,684 | Missouri Valley | 25%
|
| Chickasaw | 3,416 | New Hampton | 25%
|
| Butler | 2,014 | Parkersburg | 25%
|
| Howard | 3,911 | Cresco | 22%
|
| Osceola | 2,841 | Sibley | 22%
|
| Benton | 4,931 | Vinton | 22%
|
| Davis | 2,684 | Bloomfield | 19%
|
| Adams | 1,534 | Corning | 19%
|
| Hancock | 3,051 | Garner | 19%
|
| Worth | 2,063 | Northwood | 19%
|
| Taylor | 1,482 | Bedford | 16%
|
| Wayne | 1,519 | Corydon | 16%
|
| Wright | 3,573 | Eagle Grove | 16%
|
| Adair | 2,073 | Greenfield | 16%
|
| Ringgold | 1,617 | Mount Ayr | 16%
|
| Calhoun | 2,258 | Rockwell City | 16%
|
| Keokuk | 1,976 | Sigourney | 16%
|
| Fremont | 885 | Hamburg | 13%
|
| Van Buren | 920 | Keosauqua | 13%
|