| Post office | Kalyanpur B.O |
| Pin code | 844115 |
| Office type | B.O |
| Taluk / city | Bidupur |
| District name | Vaishali |
| State name | Bihar |
| Delivery status | Delivery |
| Division name | Vaishali |
| Region name | Patna HQ |
| Circle name | Bihar |
| Related sub office | Chaksikandar S.O |
| Related head office | Hajipur H.O |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 844115 | Chaksikandar S.O | Bidupur | Vaishali | Bihar |
| 844115 | Kalyanpur B.O | Bidupur | Vaishali | Bihar |
| 844115 | Khanpur Pakari B.O | Bidupur | Vaishali | Bihar |
| 844115 | Mohanpur B.O | Bidupur | Vaishali | Bihar |
| 844115 | Bishanpur Said Urf Bakarpur B.O | Jhandaha | Vaishali | Bihar |
| 844115 | Gauspur Bariarpur B.O | Rajapakar | Vaishali | Bihar |