845413 is the PIN Code of Kalyanpur, which is located in Gopalganj district, Bihar state.
Kalyanpur Post Office is located at Kalyanpur, East Champaran of BIHAR state. It is a Branch Post Office. A Post Office (PO) / Dak Ghar is a facility in charge of sorting, processing, and delivering mail to recipients. POs are usually regulated and funded by the Government of India (GOI). Pin code of Kalyanpur PO is 845413. This Postoffice falls under East Champaran postal division of the Bihar postal circle.