Busan's 2019 population is now estimated at 3,465,633. In 1950, the population of Busan was 947,770. Busan has grown by 19,184 since 2015, which represents a 0.14% 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 Busan, which typically includes Busan's population in addition to adjacent suburban areas.