Rostov-on-Don's 2025 population is now estimated at 1,140,390. In 1950, the population of Rostov-on-Don was 484,402. Rostov-on-Don has grown by 750 in the last year, which represents a 0.07% 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 Rostov-on-Don, which typically includes Rostov-on-Don's population in addition to adjacent suburban areas.