PinCode: 816116, Kalyanchak Post Office, Rajmahal, Sahibganj, Jharkhand
| Post Office | Kalyanchak |
| Post Office Status | Branch Post Office (Delivery) |
| PinCode | 816116
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| Telephone | |
| Town/Taluk | Rajmahal |
| District | Sahibganj |
| State | Jharkhand |
| Postal Division | Santhal Parganas |
| Postal Region | Ranchi |
| Postal Circle | Jharkhand |
List of Other Post Offices in Rajmahal, Sahibganj, Jharkhand