| Post Office | Dariapur S.o (east Champaran) | 
| Division | East Champaran | 
| Region | Muzaffarpur | 
| Circle | Bihar | 
| Taluka | Sangrampur | 
| District | East Champaran | 
| State | Bihar | 
| Phone | 06258-281643 | 
| Sub Office | NA | 
| Head Office | Motihari H.O | 
| Pincode | 
845417 
 | 
| Post Office | Sangrampur S.o (east Champaran) | 
| Division | East Champaran | 
| Region | Muzaffarpur | 
| Circle | Bihar | 
| Taluka | Sangrampur | 
| District | East Champaran | 
| State | Bihar | 
| Phone | 06258-285230 | 
| Sub Office | NA | 
| Head Office | Motihari H.O | 
| Pincode | 
845434 
 |