Amarpura BO is the primary post office registered under PIN code 841423 in Gopalganj, Bihar. This code sits within the Eastern Postal Region, with 8 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Amarpura BO | BO | Branch Post Office |
| Jhanjhawa Mohamadpur BO | BO | Branch Post Office |
| Sidhwalia SO | SO | Sub Post Office |
| Tekniwas BO | BO | Branch Post Office |
| Harpur Tengrahi BO | BO | Branch Post Office |
| Sorahiya BO | BO | Branch Post Office |
| Barhima BO | BO | Branch Post Office |
| Dumaria BO | BO | Branch Post Office |
