| Office Name | Harnahiya B.O |
| Pincodes | 843302 |
| Area | Harnahiya |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Sitamarhi |
| Postal Region | Muzaffarpur |
| District | Sitamarhi |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Harnahiya B.O |
| Pincodes | 843329 |
| Area | Harnahiya |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Sitamarhi |
| Postal Region | Muzaffarpur |
| District | Sheohar |
| State | Bihar |
| Telephone No. | Na |