| Place | Post Code |
|---|---|
| Bio-Os, Amlan (Ayuquitan) | 6203 |
| Jantianon, Amlan (Ayuquitan) | 6203 |
| Jugno, Amlan (Ayuquitan) | 6203 |
| Mag-Abo, Amlan (Ayuquitan) | 6203 |
| Poblacion, Amlan (Ayuquitan) | 6203 |
| Silab, Amlan (Ayuquitan) | 6203 |
| Tambojangin, Amlan (Ayuquitan) | 6203 |
| Tandayag, Amlan (Ayuquitan) | 6203 |