| Post Office Name | US Post Office |
| Address | 306 Main St |
| City | Spencer |
| State | South Dakota |
| Phone Number | (605) 246-2392 |
| Latitude | 43.7763 |
| Longitude | -97.5892 |
57374 US Post Office in Spencer, South Dakota is located at 306 Main St. The Spencer Post Office Number is (605) 246-2392
