| Interlaken Community Development District, FL (CDD) |
| International Falls, MN (City) |
| Inver Grove Heights, MN (City) |
| Inverness, IL (Village) |
| Inverness, FL (City) |
| Inverness, MS (Town) |
| Inverness Township, MI (Township) |
| Inwood, IA (City) |
| Inwood Township, MI (Township) |
| Inyo County, CA (County) |
| Iola, IL (Village) |
| Iola, KS (Township) |
| Iola, KS (City) |
| Iola City, TX (City) |
| Iola Town, WI (Town) |
