| Iosco, ND (Township) |
| Iosco, MN (Township) |
| Iosco County, MI (County) |
| Iosco Township, MI (Township) |
| Iota, LA (Town) |
| Iota Flat, ND (Township) |
| Iowa, NE (Township) |
| Iowa, LA (Town) |
| Iowa, ND (Township) |
| Iowa, KS (Township) |
| Iowa, KS (Township) |
| Iowa, IA (State) |
| Iowa, SD (Township) |
| Iowa, SD (Township) |
| Iowa City, IA (City) |
