The following are the zip codes in the municipalities and cities of North Cotabato.
| Region | Provinces | City/Municipality | Zip Code |
| Region 12 (Soccsksargen) | North Cotabato | Alamada | 9413 |
| Region 12 (Soccsksargen) | North Cotabato | Aleosan | 9415 |
| Region 12 (Soccsksargen) | North Cotabato | Antipas | 9414 |
| Region 12 (Soccsksargen) | North Cotabato | Arakan | 9417 |
| Region 12 (Soccsksargen) | North Cotabato | Banisilan | 9416 |
| Region 12 (Soccsksargen) | North Cotabato | Carmen | 9408 |
| Region 12 (Soccsksargen) | North Cotabato | Kabacan | 9407 |
| Region 12 (Soccsksargen) | North Cotabato | Kidapawan | 9400 |
| Region 12 (Soccsksargen) | North Cotabato | Libungan | 9411 |
| Region 12 (Soccsksargen) | North Cotabato | M’lang | 9402 |
| Region 12 (Soccsksargen) | North Cotabato | Magpet | 9404 |
| Region 12 (Soccsksargen) | North Cotabato | Makilala | 9401 |
| Region 12 (Soccsksargen) | North Cotabato | Matalam | 9406 |
| Region 12 (Soccsksargen) | North Cotabato | Midsayap | 9410 |
| Region 12 (Soccsksargen) | North Cotabato | Pigkawayan | 9412 |
| Region 12 (Soccsksargen) | North Cotabato | Pikit | 9409 |
| Region 12 (Soccsksargen) | North Cotabato | Pre. Roxas | 9405 |
| Region 12 (Soccsksargen) | North Cotabato | Tulunan | 9403 |
