| Place | Postal Code |
|---|---|
| Biong, Gigmoto | 4804 |
| Dororian, Gigmoto | 4804 |
| Poblacion District I, Gigmoto | 4804 |
| Poblacion District II, Gigmoto | 4804 |
| Poblacion District III, Gigmoto | 4804 |
| San Pedro, Gigmoto | 4804 |
| San Vicente, Gigmoto | 4804 |
| Sicmil, Gigmoto | 4804 |
| Sioron, Gigmoto | 4804 |