Bairiya is located in the district of East Champaran, Bihar. The pincode of Bairiya is 845434. The area "Bairiya" lies under takula of Areraj and has a Branch Office. Bairiya comes under the head office Motihari. The postal division for pin code 845434 is East Champaran.
| Area | Bairiya |
| Pincode | 845434 |
| Taluka or Tehsil | Areraj |
| District | East Champaran |
| State | Bihar |
| Office Status | Branch Office |
| Postal Division | East Champaran |
| Postal Region | Muzaffarpur |
| Sub Office | Sangrampur (East Champaran) |
| Head Office | Motihari |
| Contact Address | Postmaster, Post Office Bairiya (Branch Office), Areraj, Bihar, India, Pin Code: 845434 |
| Pin code | Area | District | Taluka | Postal Status |
|---|---|---|---|---|
| 845434 | Bairiya pin code | East Champaran | Areraj | Branch Office |
| 845434 | Manglapur Rajpur pin code | East Champaran | Areraj | Branch Office |
| 845434 | Puchharia pin code | East Champaran | Areraj | Branch Office |
| 845434 | Sangrampur East Champaran pin code | East Champaran | Sangrampur | Sub Office |
| 845434 | Sikandarpur pin code | East Champaran | Areraj | Branch Office |
| 845434 | Tikaha Bhawanipur pin code | East Champaran | Areraj | Branch Office |
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