Sikkim, state of India, located in the northeastern part of the country, in the eastern Himalayas. It is one of the smallest states in India. Sikkim is bordered by the Tibet Autonomous Region of China to the north and northeast, by Bhutan to the southeast, by the Indian state of West Bengal to the south, and by Nepal to the west. The capital is Gangtok, in the southeastern part of the state.
Long a sovereign political entity, Sikkim became a protectorate of India in 1950 and an Indian state in 1975. Its small size notwithstanding, Sikkim is of great political and strategic importance for India because of its location along several international boundaries. Area 2,740 square miles (7,096 square km). Pop. (2011) 607,688.