Rupganj's 2021 population is now estimated at 522,366. In 1950, the population of Rupganj was 9,682. Rupganj has grown by 40,648 since 2015, which represents a 8.44% 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 Rupganj, which typically includes Rupganj's population in addition to adjacent suburban areas.