Basel's 2021 population is now estimated at 562,710. In 1950, the population of Basel was 256,293. Basel has grown by 3,683 since 2015, which represents a 0.66% 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 Basel, which typically includes Basel's population in addition to adjacent suburban areas.