Kurnool's 2021 population is now estimated at 685,818. In 1950, the population of Kurnool was 59,087. Kurnool has grown by 20,632 since 2015, which represents a 3.10% 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 Kurnool, which typically includes Kurnool's population in addition to adjacent suburban areas.