| Post Office Name | US Post Office |
| Address | 200 Walnut St |
| City | Buffalo Gap |
| State | South Dakota |
| Phone Number | (605) 833-2301 |
| Latitude | 43.5135 |
| Longitude | -103.2763 |
57722 US Post Office in Buffalo Gap, South Dakota is located at 200 Walnut St. The Buffalo Gap Post Office Number is (605) 833-2301
