| Place | Post Code |
|---|---|
| Ilocanos Norte, San Fernando | 2500 |
| Ilocanos Sur, San Fernando | 2500 |
| Langcuas, San Fernando | 2500 |
| Lingsat, San Fernando | 2500 |
| Madayegdeg, San Fernando | 2500 |
| Mameltac, San Fernando | 2500 |
| Masicong, San Fernando | 2500 |
| Nagyubuyuban, San Fernando | 2500 |
| Namtutan, San Fernando | 2500 |
| Narra Este, San Fernando | 2500 |
| Narra Oeste, San Fernando | 2500 |
| Pacpaco, San Fernando | 2500 |
| Pagdalagan, San Fernando | 2500 |
| Pagdaraoan, San Fernando | 2500 |
| Pagudpud, San Fernando | 2500 |
| Pao Norte, San Fernando | 2500 |
| Pao Sur, San Fernando | 2500 |
| Parian, San Fernando | 2500 |
| Pias, San Fernando | 2500 |
| Poro, San Fernando | 2500 |
| Puspus, San Fernando | 2500 |
| Sacyud, San Fernando | 2500 |
| Sagayad, San Fernando | 2500 |
| San Agustin, San Fernando | 2500 |
| San Francisco, San Fernando | 2500 |
| San Vicente, San Fernando | 2500 |