Volzhsky's 2025 population is now estimated at 331,799. In 1950, the population of Volzhsky was 37,389. Volzhsky has grown by 283 in the last year, which represents a 0.09% 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 Volzhsky, which typically includes Volzhsky's population in addition to adjacent suburban areas.