811301 is the PIN Code of Kaiyar, which is located in Jamui district, Bihar state.
Kaiyar Post Office is located at Kaiyar, Jamui 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 Kaiyar PO is 811301. This Postoffice falls under Monghyr postal division of the Bihar postal circle.