| Area | Zip |
|---|---|
| Anahawan | 6610 |
| Bontoc | 6604 |
| Hinunangan | 6608 |
| Hinundayan | 6609 |
| Libagon | 6615 |
| Liloan | 6612 |
| Maasin | 6600 |
| Macrohon | 6601 |
| Malitbog | 6603 |
| Padre Burgos | 6602 |
| Pintuyan | 6614 |
| San Francisco | 6613 |
| San Juan (Cabalian) | 6611 |
| San Ricardo | 6617 |
| Silago | 6607 |
| Sogod | 6606 |
| Saint Bernard | 6616 |
| Tomas Oppus | 6605 |