Siliguri's 2025 population is now estimated at 1,191,400. In 1950, the population of Siliguri was 30,125. Siliguri has grown by 32,030 in the last year, which represents a 2.76% 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.