PIN code 841423 – Gopalganj, Bihar
841423 is the PIN code of 8 post offices in Gopalganj district, Bihar, served by the Sidhwalia SO sub office.
| Post office | Type | Delivery | Division |
|---|---|---|---|
| Sidhwalia SOMap | Post office | Yes | Siwan Division |
| Amarpura BOMap | Branch office | Yes | Siwan Division |
| Barhima BOMap | Branch office | Yes | Siwan Division |
| Dumaria BOMap | Branch office | Yes | Siwan Division |
| Harpur Tengrahi BOMap | Branch office | Yes | Siwan Division |
| Jhanjhawa Mohamadpur BOMap | Branch office | Yes | Siwan Division |
| Sorahiya BOMap | Branch office | Yes | Siwan Division |
| Tekniwas BOMap | Branch office | Yes | Siwan Division |
Source: India Post PIN code directory (Open Government Data). Branch offices usually get mail through their sub or head office.