| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Port Safety | city | Alaska | United States | 64.45 | -164.83 | 0 | |
| Port Saint Joe | city | Florida | United States | 29.81 | -85.30 | 6 | |
| Port Saint John | city | Florida | United States | 28.48 | -80.79 | 22 | |
| Port Saint Lucie | city | Florida | United States | 27.29 | -80.35 | 9 | |
| Port Saint Lucie-River Park | city | Florida | United States | 27.31 | -80.35 | 9 | |
| Port Salerno | city | Florida | United States | 27.14 | -80.20 | 9 | |
| Port San Juan | city | Alaska | United States | 60.05 | -148.07 | 141 | |
| Port San Luis | city | California | United States | 35.17 | -120.76 | 3 | |
| Port Sanilac | city | Michigan | United States | 43.43 | -82.54 | 830 | |
| Port Santorini | city | South Carolina | United States | 34.71 | -82.97 | 830 | |
| Port Serena | city | Tennessee | United States | 35.18 | -85.17 | 830 | |
| Port Sewall | city | Florida | United States | 27.19 | -80.19 | 3 | |
| Port Sheldon | city | Michigan | United States | 42.90 | -86.20 | 830 | |
| Port South | city | Alabama | United States | 33.26 | -86.83 | 830 | |
| Port Stanley | city | Washington | United States | 48.54 | -122.87 | 121 | |
| Port Sullivan | city | Texas | United States | 30.87 | -96.70 | 252 | |
| Port Sullivan (historical) | city | Texas | United States | 30.88 | -96.70 | 272 | |
| Port Sulphur | city | Louisiana | United States | 29.48 | -89.69 | 3 | |
| Port Sutton | city | Florida | United States | 27.91 | -82.42 | 6 |