| Princeville Township, IL (Township) |
| Principal One Community Development District, FL (CDD) |
| Prineville, OR (City) |
| Pringle, PA (Borough) |
| Pringle, SD (Town) |
| Prinsburg, MN (City) |
| Prior, MN (Township) |
| Prior Lake, MN (City) |
| Pritchett, CO (Town) |
| Proctor, VT (Town) |
| Proctor, MN (City) |
| Proctorville, NC (Town) |
| Proctorville, OH (Village) |
| Progreso, TX (City) |
| Progreso Lakes, TX (City) |
