852108 is the PIN Code of Koriyarh, which is located in Supaul district, Bihar state.
Koriyarh Post Office is located at Koriyarh, Supaul 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 Koriyarh PO is 852108. This Postoffice falls under Saharsa postal division of the Bihar postal circle.