| Office Name | Sonbersa B.O |
| Pincodes | 852132 |
| Area | Sonbersa |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Saharsa |
| Postal Region | Muzaffarpur |
| District | Madhepura |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Sonbersa S.O |
| Pincodes | 843330 |
| Area | Sonbersa |
| Office Status | Sub Post Office |
| Postal Circle | Bihar |
| Postal Division | Sitamarhi |
| Postal Region | Muzaffarpur |
| District | Sitamarhi |
| State | Bihar |
| Telephone No. | 06226-111111 |