| Port Byron, IL (Village) |
| Port Byron, NY (Village) |
| Port Byron Township, IL (Township) |
| Port Carbon, PA (Borough) |
| Port Chester, NY (Village) |
| Port Clinton, PA (Borough) |
| Port Clinton, OH (City) |
| Port Deposit, MD (Town) |
| Port Dickinson, NY (Village) |
| Port Edwards Town, WI (Town) |
| Port Edwards Village, WI (Village) |
| Port Emma, ND (Township) |
| Port Gibson, MS (Town) |
| Port Heiden, AK (City) |
| Port Henry, NY (Village) |
