Dehradun's 2025 population is now estimated at 1,041,060. In 1950, the population of Dehradun was 138,734. Dehradun has grown by 24,660 in the last year, which represents a 2.43% 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 Dehradun, which typically includes Dehradun's population in addition to adjacent suburban areas.