| Place |
Post Code |
| Ambitacay, Agoo |
2504 |
| Balawarte, Agoo |
2504 |
| Capas, Agoo |
2504 |
| Consolacion, Agoo |
2504 |
| Macalva Central, Agoo |
2504 |
| Macalva Norte, Agoo |
2504 |
| Macalva Sur, Agoo |
2504 |
| Nazareno, Agoo |
2504 |
| Purok, Agoo |
2504 |
| San Agustin East, Agoo |
2504 |
| San Agustin Norte, Agoo |
2504 |
| San Agustin Sur, Agoo |
2504 |
| San Antonino, Agoo |
2504 |
| San Antonio, Agoo |
2504 |
| San Francisco, Agoo |
2504 |
| San Isidro, Agoo |
2504 |
| San Joaquin Norte, Agoo |
2504 |
| San Joaquin Sur, Agoo |
2504 |
| San Jose Norte, Agoo |
2504 |
| San Jose Sur, Agoo |
2504 |
| San Juan, Agoo |
2504 |
| San Julian Central, Agoo |
2504 |
| San Julian East, Agoo |
2504 |
| San Julian Norte, Agoo |
2504 |
| San Julian West, Agoo |
2504 |
| San Manuel Norte, Agoo |
2504 |
| All postal codes in La Union |
| Agoo, La Union |
| Aringay, La Union |
| Bacnotan, La Union |
| Bagulin, La Union |
| Balaoan, La Union |
| Bangar, La Union |
| Bauang, La Union |
| Burgos, La Union |
| Caba, La Union |
| Luna, La Union |
| Naguilian, La Union |
| Pugo, La Union |
| Rosario, La Union |
| San Fernando, La Union |
| San Gabriel, La Union |
| San Juan, La Union |
| Santo Tomas, La Union |
| Santol, La Union |
| Sudipen, La Union |
| Tubao, La Union |