Kahalgaon STD Code
| City | Kahalgaon |
| STD Code | 06429 |
| District | Bhagalpur |
| State | Bihar |
STD Code of Kahalgaon is 06429. This city is located in Bhagalpur district of Bihar state in India. To call landline phones of Kahalgaon, you must add 06429 before the number.