| Post Office Name | US Post Office |
| Address | 23 Main St |
| City | Glenham |
| State | South Dakota |
| Phone Number | (605) 762-3290 |
| Latitude | 45.5329 |
| Longitude | -100.2710 |
57631 US Post Office in Glenham, South Dakota is located at 23 Main St. The Glenham Post Office Number is (605) 762-3290