| Place | Post Code |
|---|---|
| Balaquid, Cabucgayan | 6550 |
| Baso, Cabucgayan | 6550 |
| Bunga, Cabucgayan | 6550 |
| Caanibongan, Cabucgayan | 6550 |
| Casiawan, Cabucgayan | 6550 |
| Esperanza, Cabucgayan | 6550 |
| Langgao, Cabucgayan | 6550 |
| Libertad, Cabucgayan | 6550 |
| Looc, Cabucgayan | 6550 |
| Magbangon, Cabucgayan | 6550 |
| Pawikan, Cabucgayan | 6550 |
| Salawad, Cabucgayan | 6550 |
| Talibong, Cabucgayan | 6550 |
| All postal codes in Biliran | |
|---|---|
| Almeria, Biliran | |
| Biliran, Biliran | |
| Cabucgayan, Biliran | |
| Caibiran, Biliran | |
| Culaba, Biliran | |
| Kawayan, Biliran | |
| Maripipi, Biliran | |
| Naval, Biliran | |