Lakari BO is the primary post office registered under PIN code 841447 in Siwan, Bihar. This code sits within the Eastern Postal Region, with 8 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Lakari BO | BO | Branch Post Office |
| Khajuhatti BO | BO | Branch Post Office |
| Lakrinabiganj S.O | SO | Sub Post Office |
| Gopalpur BO | BO | Branch Post Office |
| Safiabad BO | BO | Branch Post Office |
| UJJAINA BO | BO | Branch Post Office |
| Dabchhu BO | BO | Branch Post Office |
| Parauli BO | BO | Branch Post Office |
