| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Barhamganj, Kalkini | 7930 |
| Postal/ZIP Codes in Kalkini, Kalkini | 7920, 8920 |
| Postal/ZIP Codes in Nilaksmibandar, Kalkini | 7931 |
| Postal/ZIP Codes in Sahabrampur, Kalkini | 7921 |
| Postal/ZIP Codes in Saheb Rampur, Kalkini | 8921 |
| Postal/ZIP Codes in Umedpur, Kalkini | 7933 |