PinCode: 821112, Doiya Post Office, Sasaram, Rohtas, Bihar
| Post Office | Doiya |
| Post Office Status | Branch Post Office (Delivery) |
| PinCode | 821112
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| Telephone | |
| Town/Taluk | Sasaram |
| District | Rohtas |
| State | Bihar |
| Postal Division | Rohtas |
| Postal Region | Patna HQ |
| Postal Circle | Bihar |
List of Other Post Offices in Sasaram, Rohtas, Bihar