Sikkim consists of 2 areas. In order to find the STD codes of Sikkim based cities, please click on any of the names given in the followings list.
Area-wise List of Sikkim STD Codes
|STD Code of Gangtok||03592|
|STD Code of Gauzing Nayabazar||03595|
You can also view the complete list of pin code of Sikkim post offices.