The official language of Sikkim is Nepali. It is the most widely spoken language in the state, with over 70% of the population speaking it as their first language. Nepali is also the language of administration and education in Sikkim.
Bhutia is the second most widely spoken language in Sikkim, with around 20% of the population speaking it as their first language. Bhutia is a Tibeto-Burman language that is closely related to Tibetan.
Lepcha is the third most widely spoken language in Sikkim, with around 10% of the population speaking it as their first language. Lepcha is a Sino-Tibetan language that is unrelated to Nepali or Bhutia.
English is not an official language of Sikkim, but it is widely spoken in the state, especially in urban areas. English is used as a second language by many people in Sikkim, and it is the language of instruction in some schools and colleges.