In Siwan district, Bihar, PIN code 841502 is anchored by Santhi BO, a Branch Post Office. Mail addressed to this code is sorted through the Eastern Postal Region, across 3 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Santhi BO | BO | Branch Post Office |
| Khujhwa SO | SO | Sub Post Office |
| Patar BO | BO | Branch Post Office |
