| Municipality | ZIP Code |
|---|---|
| Suyo | 2715 |
| Location | Municipality | Province | Region | ZIP Code |
|---|---|---|---|---|
| Baringcucurong | Suyo | Ilocos Sur | Ilocos Region | 2715 |
| Cabugao | Suyo | Ilocos Sur | Ilocos Region | 2715 |
| Man-Atong | Suyo | Ilocos Sur | Ilocos Region | 2715 |
| Patoc-Ao | Suyo | Ilocos Sur | Ilocos Region | 2715 |
| Poblacion | Suyo | Ilocos Sur | Ilocos Region | 2715 |
| Suyo Proper | Suyo | Ilocos Sur | Ilocos Region | 2715 |
| Urzadan | Suyo | Ilocos Sur | Ilocos Region | 2715 |
| Uso | Suyo | Ilocos Sur | Ilocos Region | 2715 |
