St Petersburg's 2020 population is now estimated at 5,467,808. In 1950, the population of St Petersburg was 2,902,789. St Petersburg has grown by 286,437 since 2015, which represents a 1.08% 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 St Petersburg, which typically includes St Petersburg's population in addition to adjacent suburban areas.