| Lieu | Code postal |
|---|---|
| Abaca, Cauayan | 6112 |
| Baclao, Cauayan | 6112 |
| Basak, Cauayan | 6112 |
| Bulata, Cauayan | 6112 |
| Caliling, Cauayan | 6112 |
| Camalanda-An, Cauayan | 6112 |
| Camindangan, Cauayan | 6112 |
| Elihan, Cauayan | 6112 |
| Guiljungan, Cauayan | 6112 |
| Inayawan, Cauayan | 6112 |
| Isio, Cauayan | 6112 |
| Linaon, Cauayan | 6112 |
| Lumbia, Cauayan | 6112 |
| Mambugsay, Cauayan | 6112 |
| Man-Uling, Cauayan | 6112 |
| Masaling, Cauayan | 6112 |
| Molobolo, Cauayan | 6112 |
| Poblacion, Cauayan | 6112 |
| Sura, Cauayan | 6112 |
| Talacdan, Cauayan | 6112 |
| Tambad, Cauayan | 6112 |
| Tiling, Cauayan | 6112 |
| Tomina, Cauayan | 6112 |
| Tuyom, Cauayan | 6112 |
| Yao-Yao, Cauayan | 6112 |