Amsari BO is the primary post office registered under PIN code 802126 in Buxar, Bihar. This code sits within the Eastern Postal Region, with 11 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Amsari BO | BO | Branch Post Office |
| Kasia BO | BO | Branch Post Office |
| Khandricha BO | BO | Branch Post Office |
| Bhadar BO | BO | Branch Post Office |
| Mathila BO | BO | Branch Post Office |
| Mugaon BO | BO | Branch Post Office |
| Koran Sarai SO | SO | Sub Post Office |
| Athar BO | BO | Branch Post Office |
| Belahari BO | BO | Branch Post Office |
| Kanjharua BO | BO | Branch Post Office |
| Kopawan BO | BO | Branch Post Office |
