| Office Name | Dhumnagar B.O |
| Pincodes | 855113 |
| Area | Dhumnagar |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Purnea |
| Postal Region | Muzaffarpur |
| District | Katihar |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Dhumnagar B.O |
| Pincodes | 845104 |
| Area | Dhumnagar |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | West Champaran |
| Postal Region | Muzaffarpur |
| District | West Champaran |
| State | Bihar |
| Telephone No. | Na |