| Office Name | Gopalganj H.O |
| Pincodes | 841428 |
| Area | Gopalganj |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Gopalganj |
| State | Bihar |
| Telephone No. | 06156-224603 |
| Office Name | Gopalganj S.O |
| Pincodes | 733141 |
| Area | Gopalganj |
| Office Status | Sub Post Office |
| Postal Circle | West Bengal |
| Postal Division | West Dinajpur |
| Postal Region | North Bengal And Sikkim |
| District | South Dinajpur |
| State | West Bengal |
| Telephone No. | 03522-254210 |