331304 is the PIN Code of Kalwas, which is located in Churu district, Rajasthan state.
Kalwas Post Office is located at Kalwas, Churu of RAJASTHAN 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 Kalwas PO is 331304. This Postoffice falls under Churu postal division of the Rajasthan postal circle.