Pincode 841434 · Siwan District · Bihar
| Name | Hariharpur Kala BO |
| Type | Branch Post Office |
| Pincode | 841434 |
| Taluk | Siwan Division |
| District | |
| State | |
| Coordinates | 26.2562, 84.6034 |
| Post Office | Type |
|---|---|
| Branch Post Office | |
| Branch Post Office | |
| Post Office |
Siwan, Bihar. Map data: OpenStreetMap, CARTO.
| Harihar Pur Lalgarh BO | Branch Post Office |
| Marachhi BO | Branch Post Office |
| Sarari BO | Branch Post Office |
| Sikandarpur BO | Branch Post Office |