Pincode 841239 is a 6-digit postal code serving 22 post offices in Siwan district, Bihar. Mairwa SO is the Post Office for this area, located at 26.2406°N, 84.1554°E. The first digit ‘8’ identifies the Bihar postal region; the full code pinpoints the Siwan delivery zone.
| Post Office | Type |
|---|---|
| Mairwa SO | Post Office |
| Akolhi BO | Branch Post Office |
| Anugrhnagar BO | Branch Post Office |
| Bargaon BO | Branch Post Office |
| Belaur BO | Branch Post Office |
| Belauri BO | Branch Post Office |
| Bilaspur BO | Branch Post Office |
| Bishunpura Bazar BO | Branch Post Office |
| Bishwar BO | Branch Post Office |
| Bkulari BO | Branch Post Office |
| Daraila BO | Branch Post Office |
| English BO | Branch Post Office |
| Jamuaon BO | Branch Post Office |
| Krom BO | Branch Post Office |
| Langarpura BO | Branch Post Office |
| Lebhri BO | Branch Post Office |
| Punak BO | Branch Post Office |
| Sarhrwa BO | Branch Post Office |
| Sematar BO | Branch Post Office |
| Seotapur BO | Branch Post Office |
| Sohgra BO | Branch Post Office |
| Talli BO | Branch Post Office |
Data sourced from India Post, Department of Posts, Government of India. Data last verified: May 2026.
Siwan, Bihar. Map data: OpenStreetMap, CARTO.