PinCode: 802131, Niazipur Post Office, Simri, Buxar, Bihar
| Post Office | Niazipur |
| Post Office Status | Sub Post Office (Delivery) |
| PinCode | 802131
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| Telephone | 06323-999999 |
| Town/Taluk | Simri |
| District | Buxar |
| State | Bihar |
| Postal Division | Bhojpur |
| Postal Region | Patna HQ |
| Postal Circle | Bihar |
List of Other Post Offices in Simri, Buxar, Bihar