851111 is the PIN Code of Rupasbaj, which is located in Begusarai district, Bihar state.
Rupasbaj Post Office is located at Rupasbaj, Begusarai 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 Rupasbaj PO is 851111. This Postoffice falls under Begusarai postal division of the Bihar postal circle.