Bahia Blanca's 2021 population is now estimated at 317,507. In 1950, the population of Bahia Blanca was 115,752. Bahia Blanca has grown by 1,974 since 2015, which represents a 0.63% 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 Bahia Blanca, which typically includes Bahia Blanca's population in addition to adjacent suburban areas.