Pincode 855115 is a 6-digit postal code serving 10 post offices in Kishanganj district, Bihar. Sontha SO is the Post Office for this area, located at 25.7812°N, 87.4651°E. The first digit ‘8’ identifies the Bihar postal region; the full code pinpoints the Kishanganj delivery zone.
| Post Office | Type |
|---|---|
| Sontha SO | Post Office |
| Angarhat BO | Branch Post Office |
| Dhanpatganj BO | Branch Post Office |
| Dogharia BO | Branch Post Office |
| Haldikhora BO | Branch Post Office |
| Kochadhaman BO | Branch Post Office |
| MAUDHA BO | Branch Post Office |
| Mirpur BO | Branch Post Office |
| Shishabari BO | Branch Post Office |
| Singhari BO | Branch Post Office |
Data sourced from India Post, Department of Posts, Government of India. Data last verified: May 2026.
Kishanganj, Bihar. Map data: OpenStreetMap, CARTO.