Baliwan sagar BO is the primary post office registered under PIN code 841501 in Gopalganj, Bihar. This code sits within the Eastern Postal Region, with 12 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Baliwan sagar BO | BO | Branch Post Office |
| Bishambharpur BO | BO | Branch Post Office |
| Durgmatihania BO | BO | Branch Post Office |
| Mateya Khas BO | BO | Branch Post Office |
| Sepaya BO | BO | Branch Post Office |
| Karwatahi Bazar BO | BO | Branch Post Office |
| Salehpur BO | BO | Branch Post Office |
| Uchka Gaon BO | BO | Branch Post Office |
| Kuchaikote SO | SO | Sub Post Office |
| Ratanpura BO | BO | Branch Post Office |
| Bindwalia BO | BO | Branch Post Office |
| KMATIHANIYA NRK TOLA | OTHER | post office |
