Chicago's 2021 population is now estimated at 8,877,429. In 1950, the population of Chicago was 4,999,060. Chicago has grown by 12,420 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 Chicago, which typically includes Chicago's population in addition to adjacent suburban areas.