Mangan is the headquarters of North Sikkim district. 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. Owing to its elevation, the town enjoys a temperate climate.
As of 2001[update] India census, Mangan had a population of 1248. Males constitute 62% of the population and females 38%. Mangan has an average literacy rate of 69%, higher than the national average of 59.5%: male literacy is 72%, and female literacy is 63%. In Mangan, 14% of the population is under 6 years of age.