In Siwan district, Bihar, PIN code 841226 is anchored by Mahodipur BO, a Branch Post Office. Mail addressed to this code is sorted through the Eastern Postal Region, across 4 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Mahodipur BO | BO | Branch Post Office |
| Chapra Road SO | SO | Sub Post Office |
| Siwan HO | HO | Head Post Office |
| Siwan Chowk Bazar SO | SO | Sub Post Office |
