PinCode: 802160, Katkaira Post Office, Koilwar, Bhojpur, Bihar
| Post Office | Katkaira |
| Post Office Status | Branch Post Office (Delivery) |
| PinCode | 802160
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| Telephone | |
| Town/Taluk | Koilwar |
| District | Bhojpur |
| State | Bihar |
| Postal Division | Bhojpur |
| Postal Region | Patna HQ |
| Postal Circle | Bihar |
List of Other Post Offices in Koilwar, Bhojpur, Bihar