| Place |
Post Code |
| Ambalite, Pugo |
2508 |
| Ambangonan, Pugo |
2508 |
| Cares, Pugo |
2508 |
| Cuenca, Pugo |
2508 |
| Duplas, Pugo |
2508 |
| Maoasoas Norte, Pugo |
2508 |
| Maoasoas Sur, Pugo |
2508 |
| Palina, Pugo |
2508 |
| Poblacion East, Pugo |
2508 |
| Poblacion West, Pugo |
2508 |
| San Luis, Pugo |
2508 |
| Saytan, Pugo |
2508 |
| Tavora East, Pugo |
2508 |
| Tavora Proper, Pugo |
2508 |
| 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 |