Kalchini SO is the primary post office registered under PIN code 735217 in Alipurduar, West Bengal. This code sits within the Eastern Postal Region, with 7 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Kalchini SO | SO | Sub Post Office |
| GANGUTIA TG | OTHER | post office |
| Garopara BO | BO | Branch Post Office |
| Nimti Domohani BO | BO | Branch Post Office |
| Rajabhat Tea Estate BO | BO | Branch Post Office |
| Atiabaribagan BO | BO | Branch Post Office |
| Chuapara BO | BO | Branch Post Office |
