The following are the zip codes in the municipalities and cities of Basilan.
| Region | Provinces | City/Municipality | Zip Code |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Akbar | 7307 |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Al-Barka | 7308 |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Hadji Mohammad Ajul | 7309 |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Hadji Muhtamad | 7310 |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Isabela de Basilan | 7300 |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Lamitan | 7302 |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Lantawan | 7301 |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Maluso | 7303 |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Sumisip | 7305 |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Tabuan-Lasa | 7312 |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Tipo-Tipo | 7304 |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Tuburan | 7306 |
| Bangsamoro Autonomous Region in Muslim Mindanao (BARMM) | Basilan | Ungkaya Pukan | 7311 |
