| Post Office | Hassanpur S. Mill S.o |
| Division | Samastipur |
| Region | Muzaffarpur |
| Circle | Bihar |
| Taluka | Hasanpur |
| District | Samastipur |
| State | Bihar |
| Phone | 06275-258221 |
| Sub Office | NA |
| Head Office | Samastipur H.O |
| Pincode |
848205
|
| Post Office | Mangalgarh S.o |
| Division | Samastipur |
| Region | Muzaffarpur |
| Circle | Bihar |
| Taluka | Hasanpur |
| District | Samastipur |
| State | Bihar |
| Phone | 06275-284420 |
| Sub Office | NA |
| Head Office | Samastipur H.O |
| Pincode |
848208
|