Deyang's 2025 population is now estimated at 985,078. In 1950, the population of Deyang was 12,283. Deyang has grown by 21,918 in the last year, which represents a 2.28% 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 Deyang, which typically includes Deyang's population in addition to adjacent suburban areas.