| Place | Post Code |
|---|---|
| Binucayan, Loreto | 8507 |
| Johnson, Loreto | 8507 |
| Kasapa, Loreto | 8507 |
| Katipunan, Loreto | 8507 |
| Kauswagan, Loreto | 8507 |
| Magaud, Loreto | 8507 |
| Nueva Gracia, Loreto | 8507 |
| Poblacion, Loreto | 8507 |
| Sabud, Loreto | 8507 |
| San Isidro, Loreto | 8507 |
| San Mariano, Loreto | 8507 |
| San Vicente, Loreto | 8507 |
| Santa Teresa, Loreto | 8507 |
| Santo Niño, Loreto | 8507 |
| Santo Tomas, Loreto | 8507 |
| Violanta, Loreto | 8507 |
| Waloe, Loreto | 8507 |