Towns
| State | City/Town | Town Title |
|---|---|---|
| Iowa | Runnells | Runnells, IA |
| Iowa | Russell | Russell, IA |
| Iowa | Ruthven | Ruthven, IA |
| Iowa | Rutland | Rutland, IA |
| Iowa | Ryan | Ryan, IA |
| Iowa | Sabula | Sabula, IA |
| Iowa | Sac City | Sac City, IA |
| Iowa | Saint Ansgar | Saint Ansgar, IA |
| Iowa | Saint Anthony | Saint Anthony, IA |
| Iowa | Saint Charles | Saint Charles, IA |
| Iowa | Saint Donatus | Saint Donatus, IA |
| Iowa | Saint Lucas | Saint Lucas, IA |
| Iowa | Saint Marys | Saint Marys, IA |
| Iowa | Saint Olaf | Saint Olaf, IA |
| Iowa | Saint Paul | Saint Paul, IA |
| Iowa | Salem | Salem, IA |
| Iowa | Salix | Salix, IA |
| Iowa | Sanborn | Sanborn, IA |
| Iowa | Scarville | Scarville, IA |
| Iowa | Schaller | Schaller, IA |
| Iowa | Schleswig | Schleswig, IA |
| Iowa | Scranton | Scranton, IA |
| Iowa | Searsboro | Searsboro, IA |
| Iowa | Selma | Selma, IA |
| Iowa | Sergeant Bluff | Sergeant Bluff, IA |