| Post Office Name | US Post Office |
| Address | 517 Main St |
| City | Gregory |
| State | South Dakota |
| Phone Number | (605) 835-9265 |
| Latitude | 43.2419 |
| Longitude | -99.4287 |
57533 US Post Office in Gregory, South Dakota is located at 517 Main St. The Gregory Post Office Number is (605) 835-9265
