PinCode: 841428, Gopalganj Post Office, Gopalganj, Gopalganj, Bihar
| Post Office | Gopalganj |
| Post Office Status | Head Post Office (Delivery) |
| PinCode | 841428
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| Telephone | 06156-224603 |
| Town/Taluk | Gopalganj |
| District | Gopalganj |
| State | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| Postal Circle | Bihar |
List of Other Post Offices in Gopalganj, Gopalganj, Bihar