846005 is the PIN Code of Siso, which is located in Darbhanga district, Bihar state.
Siso Post Office is located at Siso, Darbhanga 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 Siso PO is 846005. This Postoffice falls under Darbhanga postal division of the Bihar postal circle.