PinCode: 803211, Karjan Post Office, Asthawan, Patna, Bihar
| Post Office | Karjan |
| Post Office Status | Branch Post Office (Delivery) |
| PinCode | 803211
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| Telephone | |
| Town/Taluk | Asthawan |
| District | Patna |
| State | Bihar |
| Postal Division | Nalanda |
| Postal Region | Patna HQ |
| Postal Circle | Bihar |
List of Other Post Offices in Asthawan, Patna, Bihar