The following are the zip codes in the municipalities and cities of Oriental Mindoro.
| Region | Provinces | City/Municipality | Zip Code |
| Region 4B (MIMAROPA) | Oriental Mindoro | Calapan | 5200 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Baco | 5201 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Bansud | 5210 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Bongabong | 5211 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Bulalacao | 5214 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Gloria | 5209 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Mansalay | 5213 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Naujan | 5204 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Pinamalayan | 5208 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Pola | 5206 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Puerto Galera | 5203 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Roxas | 5212 |
| Region 4B (MIMAROPA) | Oriental Mindoro | San Teodoro | 5202 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Socorro | 5207 |
| Region 4B (MIMAROPA) | Oriental Mindoro | Victoria | 5205 |
