Mianyang Sichuan's 2021 population is now estimated at 1,300,725. In 1950, the population of Mianyang Sichuan was 73,768. Mianyang Sichuan has grown by 24,874 since 2015, which represents a 1.95% 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 Mianyang Sichuan, which typically includes Mianyang Sichuan's population in addition to adjacent suburban areas.