| Post office | Kalyanchak B.O |
| Pin code | 816116 |
| Office type | B.O |
| Taluk / city | Rahmahal |
| District name | Sahibganj |
| State name | Jharkhand |
| Delivery status | Delivery |
| Division name | Santhal Parganas |
| Region name | Ranchi |
| Circle name | Jharkhand |
| Related sub office | Tinpahar RS S.O |
| Related head office | Dumka H.O |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 816116 | Kalyanchak B.O | Rahmahal | Sahibganj | Jharkhand |
| 816116 | Jonka B.O | Rajmahal | Sahibganj | Jharkhand |
| 816116 | Tinpahar RS S.O | Rajmahal | Sahibganj | Jharkhand |
| 816116 | Bara Durgapur B.O | Taljhari | Sahibganj | Jharkhand |
| 816116 | Brindaban B.O | Taljhari | Sahibganj | Jharkhand |