| Post Office | Mohiuddin Nagar R.s S.o |
| Division | Samastipur |
| Region | Muzaffarpur |
| Circle | Bihar |
| Taluka | Mohiuddinagar |
| District | Samastipur |
| State | Bihar |
| Phone | 06278-111111 |
| Sub Office | NA |
| Head Office | Samastipur H.O |
| Pincode |
848502
|
| Post Office | Waini S.o |
| Division | Samastipur |
| Region | Muzaffarpur |
| Circle | Bihar |
| Taluka | Mohiuddinagar |
| District | Samastipur |
| State | Bihar |
| Phone | 06274-111111 |
| Sub Office | NA |
| Head Office | Samastipur H.O |
| Pincode |
848131
|