| Place | Postal Code |
|---|---|
| Alingarog, Guiuan | 6809 |
| Bagua, Guiuan | 6809 |
| Banaag, Guiuan | 6809 |
| Banahao, Guiuan | 6809 |
| Baras, Guiuan | 6809 |
| Barbo, Guiuan | 6809 |
| Bitaugan, Guiuan | 6809 |
| Bucao, Guiuan | 6809 |
| Buenavista, Guiuan | 6809 |
| Bungtod, Guiuan | 6809 |
| Cagdara-O, Guiuan | 6809 |
| Cagusu-An, Guiuan | 6809 |
| Camparang, Guiuan | 6809 |
| Campoyong, Guiuan | 6809 |
| Canawayon, Guiuan | 6809 |
| Cantahay, Guiuan | 6809 |
| Casuguran, Guiuan | 6809 |
| Cogon, Guiuan | 6809 |
| Culasi, Guiuan | 6809 |
| Dalaragan, Guiuan | 6809 |
| Gahoy, Guiuan | 6809 |
| Habag, Guiuan | 6809 |
| Hagna, Guiuan | 6809 |
| Hamorawon, Guiuan | 6809 |
| Hollywood, Guiuan | 6809 |
| Inapulangan, Guiuan | 6809 |