PinCode: 804424, Koiri Bigha Post Office, Belaganj, Jehanabad, Bihar
| Post Office | Koiri Bigha |
| Post Office Status | Branch Post Office (Delivery) |
| PinCode | 804424
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| Telephone | |
| Town/Taluk | Belaganj |
| District | Jehanabad |
| State | Bihar |
| Postal Division | Gaya |
| Postal Region | Patna HQ |
| Postal Circle | Bihar |
List of Other Post Offices in Belaganj, Jehanabad, Bihar