845433 is the PIN Code of Chainpur, which is located in Araria district, Bihar state.
Chainpur Post Office is located at Chainpur, 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 Chainpur PO is 845433. This Postoffice falls under East Champaran postal division of the Bihar postal circle.