854337 is the PIN Code of Kalsar, which is located in Purnia district, Bihar state.
Kalsar Post Office is located at Kalsar, Purnia 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 Kalsar PO is 854337. This Postoffice falls under Purnea postal division of the Bihar postal circle.