| Nielsville, MN (City) |
| Nightmute City, AK (City) |
| Nikolai, AK (City) |
| Nile Township, OH (Township) |
| Niles, OH (City) |
| Niles, MI (City) |
| Niles, IL (Village) |
| Niles, NY (Town) |
| Niles, IN (Township) |
| Niles Township, IA (Township) |
| Niles Township, MI (Township) |
| Niles Township, IL (Township) |
| Nilsen, MN (Township) |
| Nilwood, IL (Town) |
| Nilwood Township, IL (Township) |
