Siliguri's 2021 population is now estimated at 1,056,551. In 1950, the population of Siliguri was 30,125. Siliguri has grown by 36,248 since 2015, which represents a 3.55% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Siliguri, which typically includes Siliguri's population in addition to adjacent suburban areas.