| Post Office Name | US Post Office |
| Address | 109 Broadway St |
| City | Rockham |
| State | South Dakota |
| Phone Number | (605) 472-1236 |
| Latitude | 45.0270 |
| Longitude | -98.7776 |
57470 US Post Office in Rockham, South Dakota is located at 109 Broadway St. The Rockham Post Office Number is (605) 472-1236
