East Sikkim in Sikkim is served by 100 post offices operating under 13 unique pin codes. Postal administration in East Sikkim is organized into Head Post Offices (HO), Sub Post Offices (SO), and Branch Post Offices (BO) to manage daily mail distribution, Speed Post bookings, and financial services.
Because East Sikkim encompasses expanding commercial zones and residential neighborhoods, delivery areas are divided across multiple 6-digit pincodes to ensure efficient mail routing. Browse the complete city list above or filter by office type to find the exact postal code for your locality.
Post offices in East Sikkim are classified as either Delivery or Non-Delivery offices. Delivery offices dispatch postmen to deliver letters and parcels directly to doorsteps, whereas Non-Delivery offices focus exclusively on counter bookings, postal money orders, and banking services.
East Sikkim has 13 pin codes across 100 post offices.
Type your locality or post office name into the search box above. It matches office names and addresses, so a street or neighbourhood name usually works.
Gangtok is the head post office for East Sikkim, at pincode 737101.