| Place |
Post Code |
| Bautista, Caba |
2502 |
| Gana, Caba |
2502 |
| Juan Cartas, Caba |
2502 |
| Las-Ud, Caba |
2502 |
| Liquicia, Caba |
2502 |
| Poblacion Norte, Caba |
2502 |
| Poblacion Sur, Caba |
2502 |
| San Carlos, Caba |
2502 |
| San Cornelio, Caba |
2502 |
| San Fermin, Caba |
2502 |
| San Gregorio, Caba |
2502 |
| San Jose, Caba |
2502 |
| Santiago Norte, Caba |
2502 |
| Santiago Sur, Caba |
2502 |
| Sobredillo, Caba |
2502 |
| Urayong, Caba |
2502 |
| Wenceslao, Caba |
2502 |
| 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 |