Chainpur is Taluka (Tehsil) in Kaimur Bhabua district of Bihar state. Chainpur has 7 areas (postal offices).
| Pin code | Area | District | Taluka | Postal Status |
|---|---|---|---|---|
| 821106 | Badauha PIN Code | Kaimur Bhabua | Chainpur | Branch Office |
| 821103 | Chainpur Kaimur Bhabua PIN Code | Kaimur Bhabua | Chainpur | Sub Office |
| 821106 | Chhotka Amaon PIN Code | Kaimur Bhabua | Chainpur | Branch Office |
| 821110 | Chhotki Kulhariya PIN Code | Kaimur Bhabua | Chainpur | Branch Office |
| 821106 | Hatta Kaimur Bhabua PIN Code | Kaimur Bhabua | Chainpur | Sub Office |
| 821110 | Kajura PIN Code | Kaimur Bhabua | Chainpur | Branch Office |
| 802218 | Surware Ke Bararhi PIN Code | Kaimur Bhabua | Chainpur | Branch Office |