South Iowa Cities
| 1 | Polk County | 209,232 |
| 2 | Polk County | 73,300 |
| 3 | Warren County | 16,103 |
| 4 | Warren County | 15,524 |
| 5 | Marion County | 7,386 |
| 6 | Clarke County | 5,616 |
| 7 | Warren County | 4,379 |
| 8 | Lucas County | 4,310 |
| 9 | Jasper County | 2,024 |
| 10 | Decatur County | 1,979 |
| 11 | Decatur County | 1,819 |
| 12 | Dallas County | 1,802 |
| 13 | Marion County | 1,690 |
| 14 | Wayne County | 1,542 |
| 15 | Marion County | 1,180 |
| 16 | Warren County | 755 |
| 17 | Warren County | 722 |
| 18 | Madison County | 642 |
| 19 | Wayne County | 640 |
| 20 | Clarke County | 606 |
| 21 | Madison County | 525 |
| 22 | Warren County | 524 |
| 23 | Warren County | 491 |
| 24 | Lucas County | 474 |
| 25 | Wayne County | 471 |
| 26 | Polk County | 449 |
| 27 | Wayne County | 432 |
| 28 | Warren County | 407 |
| 29 | Warren County | 331 |
| 30 | Decatur County | 197 |
| 31 | Wayne County | 192 |
| 32 | Decatur County | 179 |
| 33 | Decatur County | 179 |
| 34 | Decatur County | 178 |
| 35 | Madison County | 175 |
| 36 | Decatur County | 174 |
| 37 | Lucas County | 174 |
| 38 | Decatur County | 138 |
| 39 | Clarke County | 138 |
| 40 | Lucas County | 127 |
| 41 | Clarke County | 119 |
| 42 | Warren County | 117 |
| 43 | Warren County | 113 |
| 44 | Monroe County | 110 |
| 45 | Wayne County | 91 |
| 46 | Lucas County | 89 |
| 47 | Marion County | 77 |
| 48 | Warren County | 68 |
| 49 | Wayne County | 67 |
| 50 | Madison County | 60 |
| 51 | Warren County | 59 |
| 52 | Appanoose County | 57 |
| 53 | Wayne County | 43 |
| 54 | Decatur County | 30 |
| 55 | Decatur County | 12 |