Kahara is Taluka (Tehsil) in Saharsa district of Bihar state. Kahara has 14 areas (postal offices).
| Pin code | Area | District | Taluka | Postal Status |
|---|---|---|---|---|
| 852202 | Amarpur PIN Code | Saharsa | Kahara | Branch Office |
| 852212 | Bariahi PIN Code | Saharsa | Kahara | Branch Office |
| 852202 | Basauna PIN Code | Saharsa | Kahara | Branch Office |
| 852202 | Benghaha PIN Code | Saharsa | Kahara | Branch Office |
| 852202 | Dhamsena PIN Code | Saharsa | Kahara | Branch Office |
| 852202 | Haripur PIN Code | Saharsa | Kahara | Branch Office |
| 852202 | Mohanpur Dudhela PIN Code | Saharsa | Kahara | Branch Office |
| 852202 | Rupanagar PIN Code | Saharsa | Kahara | Branch Office |
| 852201 | Saharsa PIN Code | Saharsa | Kahara | Head Office |
| 852202 | Saharsa Basti PIN Code | Saharsa | Kahara | Branch Office |
| 852201 | Saharsa Dist Board PIN Code | Saharsa | Kahara | Sub Office |
| 852202 | Simraha PIN Code | Saharsa | Kahara | Branch Office |
| 852202 | Sisai PIN Code | Saharsa | Kahara | Branch Office |
| 852202 | Sulindabad PIN Code | Saharsa | Kahara | Branch Office |