Chhwani Bazar SO is the primary post office registered under PIN code 271801 in Bahraich, Uttar Pradesh. This code sits within the Northern Postal Region, with 5 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Chhwani Bazar SO | SO | Sub Post Office |
| Qanoongopura SO | SO | Sub Post Office |
| Bahraich HO | HO | Head Post Office |
| Gudari Bazar SO | SO | Sub Post Office |
| Bahraich City SO | SO | Sub Post Office |
