| Office Name | Birnagar B.O |
| Pincodes | 854102 |
| Area | Birnagar |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Purnea |
| Postal Region | Muzaffarpur |
| District | Purnia |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Birnagar S.O |
| Pincodes | 741127 |
| Area | Birnagar |
| Office Status | Sub Post Office |
| Postal Circle | West Bengal |
| Postal Division | Nadia South |
| Postal Region | Calcutta |
| District | Nadia |
| State | West Bengal |
| Telephone No. | 03473-260224 |