| Place | Post Code |
|---|---|
| Sampaguita, Naujan | 5204 |
| San Agustin I, Naujan | 5204 |
| San Agustin II, Naujan | 5204 |
| San Andres, Naujan | 5204 |
| San Antonio, Naujan | 5204 |
| San Carlos, Naujan | 5204 |
| San Isidro, Naujan | 5204 |
| San Jose, Naujan | 5204 |
| San Luis, Naujan | 5204 |
| San Nicolas, Naujan | 5204 |
| San Pedro, Naujan | 5204 |
| Santa Cruz, Naujan | 5204 |
| Santa Isabel, Naujan | 5204 |
| Santa Maria, Naujan | 5204 |
| Santiago, Naujan | 5204 |
| Santo Niño, Naujan | 5204 |
| Tagumpay, Naujan | 5204 |
| Tigkan, Naujan | 5204 |