| Place | Post Code |
|---|---|
| Basdio, Guindulman | 6310 |
| Bato, Guindulman | 6310 |
| Bayong, Guindulman | 6310 |
| Biabas, Guindulman | 6310 |
| Bulawan, Guindulman | 6310 |
| Cabantian, Guindulman | 6310 |
| Canhaway, Guindulman | 6310 |
| Cansiwang, Guindulman | 6310 |
| Casbu, Guindulman | 6310 |
| Catungawan Norte, Guindulman | 6310 |
| Catungawan Sur, Guindulman | 6310 |
| Guinacot, Guindulman | 6310 |
| Guio-Ang, Guindulman | 6310 |
| Lombog, Guindulman | 6310 |
| Mayuga, Guindulman | 6310 |
| Sawang, Guindulman | 6310 |
| Tabajan, Guindulman | 6310 |
| Tabunok, Guindulman | 6310 |
| Trinidad, Guindulman | 6310 |