| Post office | Bithuna B.O |
| Pin code | 841507 |
| Office type | B.O |
| Taluk / city | Siwan |
| District name | Siwan |
| State name | Bihar |
| Delivery status | Delivery |
| Division name | Siwan |
| Region name | Muzaffarpur |
| Circle name | Bihar |
| Related sub office | Mora S.O (Siwan) |
| Related head office | Siwan H.O |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 841507 | Lawa Rampur B.O | Bhagwanpur Hat | Siwan | Bihar |
| 841507 | Bherwania B.O | Siwan | Siwan | Bihar |
| 841507 | Bithuna B.O | Siwan | Siwan | Bihar |
| 841507 | Chakia B.O | Siwan | Siwan | Bihar |
| 841507 | Govindapur B.O | Siwan | Siwan | Bihar |
| 841507 | Mora S.O (Siwan) | Siwan | Siwan | Bihar |
| 841507 | P.K.Rampur B.O | Siwan | Siwan | Bihar |
| 841507 | Sadiha B.O | Siwan | Siwan | Bihar |
| 841507 | Singhauli B.O | Siwan | Siwan | Bihar |