| Office Name | Tarwa B.O |
| Pincodes | 841226 |
| Area | Tarwa |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Siwan |
| Postal Region | Muzaffarpur |
| District | Siwan |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Tarwa B.O |
| Pincodes | 227816 |
| Area | Tarwa |
| Office Status | Branch Post Office |
| Postal Circle | Uttar Pradesh |
| Postal Division | Sultanpur |
| Postal Region | Lucknow Hq |
| District | Sultanpur |
| State | Uttar Pradesh |
| Telephone No. | Na |