| Post office | Chakki B.O |
| Pin code | 802120 |
| Office type | B.O |
| Taluk / city | Simri |
| District name | Buxar |
| State name | Bihar |
| Delivery status | Delivery |
| Division name | Bhojpur |
| Region name | Patna HQ |
| Circle name | Bihar |
| Related sub office | Dumari S.O (Buxar) |
| Related head office | Buxar H.O |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 802120 | Dumari S.O (Buxar) | Dumraon | Buxar | Bihar |
| 802120 | Barka Singhanpura B.O | Simri | Buxar | Bihar |
| 802120 | Chakki B.O | Simri | Buxar | Bihar |
| 802120 | Kharahatand B.O | Simri | Buxar | Bihar |
| 802120 | Rani Singhanpura B.O | Simri | Buxar | Bihar |