Koilwar is located in the district of Bhojpur, Bihar. The pincode of Koilwar is 802160. The area "Koilwar" lies under takula of Arrah and has a Sub Office. Koilwar comes under the head office Arrah. The postal division for pin code 802160 is Bhojpur.
| Area | Koilwar |
| Pincode | 802160 |
| Taluka or Tehsil | Arrah |
| District | Bhojpur |
| State | Bihar |
| Office Status | Sub Office |
| Postal Division | Bhojpur |
| Postal Region | Patna HQ |
| Sub Office | NA |
| Head Office | Arrah |
| Contact Address | Postmaster, Post Office Koilwar (Sub Office), Arrah, Bihar, India, Pin Code: 802160 |
| Telephone | 06182-282207 |
| Pin code | Area | District | Taluka | Postal Status |
|---|---|---|---|---|
| 802160 | Dhandihan pin code | Bhojpur | Arrah | Branch Office |
| 802160 | Katkaira pin code | Bhojpur | Koilwar | Branch Office |
| 802160 | Koilwar pin code | Bhojpur | Arrah | Sub Office |
| 802160 | Kulharia pin code | Bhojpur | Arrah | Branch Office |
| 802160 | Pareo pin code | Bhojpur | Koilwar | Branch Office |
| 802160 | Sakaddi pin code | Bhojpur | Arrah | Branch Office |
Note: While we try to make the pincode data as accurate as possible, sometimes there might be inaccuracy in data. Please feel free and point it out in the below comment section.