Basel's 2023 population is now estimated at 570,433. In 1950, the population of Basel was 256,293. Basel has grown by 3,930 in the last year, which represents a 0.69% 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.