In Begusarai district, Bihar, PIN code 851117 is anchored by Dumri 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 |
|---|---|---|
| Dumri BO | BO | Branch Post Office |
| Nagdah BO | BO | Branch Post Office |
| Refinery Township SO | SO | Sub Post Office |
