| Office Name | Tarwara B.O |
| Pincodes | 847427 |
| Area | Tarwara |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Darbhanga |
| Postal Region | Muzaffarpur |
| District | Darbhanga |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Tarwara B.O |
| Pincodes | 847201 |
| Area | Tarwara |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Darbhanga |
| Postal Region | Muzaffarpur |
| District | Darbhanga |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Tarwara S.O |
| Pincodes | 841506 |
| Area | Tarwara |
| Office Status | Sub Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | 06153-111111 |