Post Offices List in Duncansville City, Pennsylvania:
| Duncansville Post Office | 146 Deville Dr, Duncansville, PA 16635 |
| Altoona Post Office | 141 Patchway Rd, Duncansville, PA 16635 |
| Duncansville Post Office | 146 Deville Dr, Duncansville, PA 16635 |
| Altoona Post Office | 141 Patchway Rd, Duncansville, PA 16635 |