Raniganj's 2025 population is now estimated at 507,918. In 1950, the population of Raniganj was 25,720. Raniganj has grown by 16,848 in the last year, which represents a 3.43% 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 Raniganj, which typically includes Raniganj's population in addition to adjacent suburban areas.