State · Capital: Gangtok · 4 Districts · 211 Post Offices · 26 PIN Codes
Sikkim, India's smallest state by population, is a high-altitude Himalayan state bordering Nepal, Bhutan, China, and West Bengal. Its postal network must operate at elevations up to 5,000 metres in districts like North Sikkim, making India Post deliveries here among the world's highest-altitude mail routes.
Sikkim PIN codes begin with 737, with Gangtok HO as the lone major sorting facility for the state.
Sikkim has 211 post offices across 4 districts, with 26 unique PIN codes. Browse the districts listed above to find specific PIN codes.
Sikkim has 4 districts with postal coverage as per India Post records.
The capital of Sikkim is Gangtok.
Click on any district above to see all PIN codes and post offices in that district of Sikkim. You can also use the search bar on the homepage to search by office name or PIN code directly.
Sikkim is a state of India with its own elected legislative assembly.
Sikkim has 26 unique PIN codes across its 4 districts.
In Sikkim, PIN codes begin with 737. The first digit indicates the postal zone, the second digit represents the sub-zone (Sikkim), and the remaining four digits identify the sorting district and specific post office.
Sikkim has 211 post offices, including Head Offices (H.O), Sub Offices (S.O), and Branch Offices (B.O).
Yes. All valid PIN codes in Sikkim are accepted by e-commerce platforms like Amazon, Flipkart, Myntra, and courier services like Blue Dart, DTDC, and Delhivery for delivery serviceability checks.
H.O stands for Head Office — the primary post office of a postal division. Sikkim has one H.O per district that serves as the hub for all S.O (Sub Office) and B.O (Branch Office) post offices in that area.