| Place | Post Code |
|---|---|
| Balogo, San Sebastian | 6714 |
| Barangay 1, San Sebastian | 6714 |
| Barangay 2, San Sebastian | 6714 |
| Barangay 3, San Sebastian | 6714 |
| Barangay 4, San Sebastian | 6714 |
| Bontod, San Sebastian | 6714 |
| Cabaywa, San Sebastian | 6714 |
| Camanhagay, San Sebastian | 6714 |
| Campiyak, San Sebastian | 6714 |
| Canduyucan, San Sebastian | 6714 |
| Dolores, San Sebastian | 6714 |
| Hita-Asan I, San Sebastian | 6714 |
| Hita-Asan II, San Sebastian | 6714 |
| Inobongan, San Sebastian | 6714 |