| Post Office | Baghauna B.o |
| Division | Saran |
| Region | Muzaffarpur |
| Circle | Bihar |
| Taluka | Siswan |
| District | Siwan |
| State | Bihar |
| Phone | NA |
| Sub Office | Mohamadpur S.O |
| Head Office | Chapra H.O |
| Pincode |
841223
|
| Post Office | Bhagar B.o |
| Division | Siwan |
| Region | Muzaffarpur |
| Circle | Bihar |
| Taluka | Siswan |
| District | Siwan |
| State | Bihar |
| Phone | NA |
| Sub Office | Gangpur Siswan S.O |
| Head Office | Siwan H.O |
| Pincode |
841210
|
| Post Office | Gayaspur B.o |
| Division | Siwan |
| Region | Muzaffarpur |
| Circle | Bihar |
| Taluka | Siswan |
| District | Siwan |
| State | Bihar |
| Phone | NA |
| Sub Office | Gangpur Siswan S.O |
| Head Office | Siwan H.O |
| Pincode |
841210
|