Sevastopol's 2026 population is now estimated at 401,452. In 1950, the population of Sevastopol was 105,490. Sevastopol experienced a decrease of -100 residents over the past year, marking an annual decline of -0.02%. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects . These estimates represent the Urban agglomeration of Sevastopol, which typically includes Sevastopol's population in addition to adjacent suburban areas.