STD Codes for cities & towns in Sikkim

Here is a list of STD (Subscriber Trunk Dialing) codes for the major cities and towns in Sikkim, India. Due to the small size of the state, Sikkim has fewer unique STD codes, with most areas falling under Gangtok’s or nearby exchange codes.

Since Sikkim is a small Himalayan state, the majority of its towns and subdivisions use shared STD codes from larger neighboring towns like Gangtok or Namchi. The telephone infrastructure is centralized, especially in rural and hill areas.