| Post office | Harpurjan B.O |
| Pin code | 841420 |
| Office type | B.O |
| Taluk / city | Gopalganj |
| District name | Gopalganj |
| State name | Bihar |
| Delivery status | Delivery |
| Division name | Siwan |
| Region name | Muzaffarpur |
| Circle name | Bihar |
| Related sub office | Rajapatti S.O |
| Related head office | Gopalganj H.O |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 841420 | Dabchhu B.O | Gopalganj | Gopalganj | Bihar |
| 841420 | Faizullahpur B.O | Gopalganj | Gopalganj | Bihar |
| 841420 | Gamharia B.O | Gopalganj | Gopalganj | Bihar |
| 841420 | Gopalpur B.O | Gopalganj | Gopalganj | Bihar |
| 841420 | Harpurjan B.O | Gopalganj | Gopalganj | Bihar |
| 841420 | Katalpur B.O | Gopalganj | Gopalganj | Bihar |
| 841420 | Matiyari B.O | Gopalganj | Gopalganj | Bihar |
| 841420 | Paharpur B.O | Gopalganj | Gopalganj | Bihar |
| 841420 | Rajapatti S.O | Gopalganj | Gopalganj | Bihar |