Tongliao's 2021 population is now estimated at 720,662. In 1950, the population of Tongliao was 41,441. Tongliao has grown by 18,382 since 2015, which represents a 2.62% 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 Tongliao, which typically includes Tongliao's population in addition to adjacent suburban areas.