Mangan is a town and the headquarters of North Sikkim district in the Indian State of Sikkim. The town is connected to the capital Gangtok by a metalled road. North Sikkim is the largest district of Sikkim in terms of area. The town lies in the geographic south of the district. After the opening up of the district, Mangan has witnessed a spurt in its economy, mostly due to tourism. The town opens up the Tibetan Plateau. Mangan also serves the towns of Lachung, Chungthang and Lachen in the far north.