| Place | Post Code |
|---|---|
| Chittagong, Kotwali | 4000, 4200 |
| Chittagong Airport, Kotwali | 4205 |
| Chittagong Bandar, Kotwali | 4100 |
| Chittagong Cantonment, Kotwali | 4220 |
| Chittagong Customs Accademy, Kotwali | 4219 |
| Chittagong Politechnic, Kotwali | 4209 |
| Chittagong Sailers Colony, Kotwali | 4218 |
| Chittagong University, Kotwali | 4331 |
| Export Processing, Kotwali | 4223 |
| Rampura, Kotwali | 4224 |