The following are the zip codes in the municipalities of Mountain Province.
| Region | Provinces | City/Municipality | Zip Code |
| CAR (Cordillera Administrative Region) | Mountain Province | Barlig | 2623 |
| CAR (Cordillera Administrative Region) | Mountain Province | Bauko | 2621 |
| CAR (Cordillera Administrative Region) | Mountain Province | Besao | 2618 |
| CAR (Cordillera Administrative Region) | Mountain Province | Bontoc | 2616 |
| CAR (Cordillera Administrative Region) | Mountain Province | Natonin | 2624 |
| CAR (Cordillera Administrative Region) | Mountain Province | Paracelis | 2625 |
| CAR (Cordillera Administrative Region) | Mountain Province | Sabangan | 2622 |
| CAR (Cordillera Administrative Region) | Mountain Province | Sadanga | 2617 |
| CAR (Cordillera Administrative Region) | Mountain Province | Sagada | 2619 |
| CAR (Cordillera Administrative Region) | Mountain Province | Tadian | 2620 |
