.33; 88.62Country IndiaAdmission to Union †16 May 1975CapitalGangtokLargest cityGangtokDistricts4රජය • GovernorShriniwas Dadasaheb Patil • Chief MinisterPawan Chamling (SDF) • LegislatureUnicameral (32 seats) • Parliamentary constituencyRajya Sabha 1  Lok Sabha 1 • High CourtSikkim High Courtසරිය • මුළු7,096 කිමී2 (2,740 සතරැස් සැත)භුමිප්‍රමාණ අනුස්ථිතිය29thජනගහණය(2011)[1] • මුළු607,688 • අනුස්ථිතිය29th • ඝණත්වයBad rounding here86/කිමී2 (Bad rounding here220/වර්ග සැත)Languages[2] • OfficialNepali (lingua franca)  English • Additional officialBhutia, Gurung, Lepcha, Limboo, Manger, Mukhia, Newari, Rai, Sikkimese, Sherpa, Tamangවේලා කලාපIST (UTC+05:30)ISO 3166 කේතයIN-SKHDI 0.684 (medium)HDI rank7th (2005)Literacy82.2% (13th)වෙබ් අඩවියsikkim.gov.in† Assembly of Sikkim abolished monarchy and resolved to be a constituent unit of India. A referendum was held on these issues and majority of the voters voted yes. On 15 May 1975 the President of India ratified a constitutional amendment that ma