737111 is the PIN Code of Sinek, which is located in West Sikkim district, Sikkim state.
Sinek Post Office is located at Sinek, West Sikkim of SIKKIM 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 Sinek PO is 737111. This Postoffice falls under Sikkim postal division of the West Bengal postal circle.