Calabar Postal Codes are 540001 – 540283. Calabar, the capital city of Cross River State, is divided into Calabar Municipal and Calabar South LGAs. Here are the postcodes for the streets in Calabar:
| Town (LG) | Place/Area | Postal code |
| Calabar | Ikot-Ansa | 540212 |
| Calabar | Ediba | 540211 |
| Calabar | Ikot Omin | 540213 |
| Calabar | Airport | 540221 |
| Calabar | State Housing Estate | 540222 |
| Calabar | Bogobiri | 540241 |
| Calabar | Eta Agbor | 540242 |
| Calabar | Goldie | 540243 |
| Calabar | Dan Archibon | 540251 |
| Calabar | Ekpo Abasi | 540252 |
| Calabar | Uwanse | 540253 |
| Calabar | Egerton | 540261 |
| Calabar | Egerton Area II | 540261 |
| Calabar | Stadium | 540261 |
| Calabar | Essien Town | 540271 |