| Place | PINCODE | location | District | State |
People who checked pin code of S.T.P. KAHALGAON S.O, also checked pin code of places listed below.
| Bahadurganj S.O (Kishanganj) |
| Kishanganj Bazar S.O |
| Kishanganj S.O |
| Sontha S.O |
| Taiyabpur S.O |
| Galgalia S.O |
| Thakurganj S.O |