| Place | Post Code |
|---|---|
| Asinan, Olongapo | 2200 |
| Banicain, Olongapo | 2200 |
| Barreto, Olongapo | 2200 |
| East Bajac-Bajac, Olongapo | 2200 |
| East Tapinac, Olongapo | 2200 |
| Gordon Heights, Olongapo | 2200 |
| Kalaklan, Olongapo | 2200 |
| Mabayuan, Olongapo | 2200 |
| New Cabalan, Olongapo | 2200 |
| New Ilalim, Olongapo | 2200 |
| New Kababae, Olongapo | 2200 |
| New Kalalake, Olongapo | 2200 |
| Old Cabalan, Olongapo | 2200 |
| Pag-Asa, Olongapo | 2200 |
| Santa Rita, Olongapo | 2200 |
| West Bajac-Bajac, Olongapo | 2200 |
| West Tapinac, Olongapo | 2200 |