843327 is the PIN Code of Khairwa, which is located in Sitamarhi district, Bihar state.
Khairwa Post Office is located at Khairwa, Sitamarhi 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 Khairwa PO is 843327. This Postoffice falls under Sitamarhi postal division of the Bihar postal circle.