| Place | Post Code |
|---|---|
| Agawa, Besao | 2618 |
| Ambaguio, Besao | 2618 |
| Banguitan, Besao | 2618 |
| Besao East, Besao | 2618 |
| Besao West, Besao | 2618 |
| Catengan, Besao | 2618 |
| Gueday, Besao | 2618 |
| Kin-Iway, Besao | 2618 |
| Lacmaan, Besao | 2618 |
| Laylaya, Besao | 2618 |
| Padangan, Besao | 2618 |
| Payeo, Besao | 2618 |
| Suquib, Besao | 2618 |
| Tamboan, Besao | 2618 |