| Office Name | Dumraon S.O |
| Pincodes | 802119 |
| Area | Dumraon |
| Office Status | Sub Post Office |
| Postal Circle | Bihar |
| Postal Division | Bhojpur |
| Postal Region | Patna Hq |
| District | Buxar |
| State | Bihar |
| Telephone No. | 06183-222720 |
| Office Name | Dumraon B.O |
| Pincodes | 825402 |
| Area | Dumraon |
| Office Status | Branch Post Office |
| Postal Circle | Jharkhand |
| Postal Division | Hazaribagh |
| Postal Region | Ranchi |
| District | Hazaribag |
| State | Jharkhand |
| Telephone No. | Na |