Wenchang's 2025 population is now estimated at 409,170. In 1950, the population of Wenchang was 3,115. Wenchang has grown by 9,107 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 Wenchang, which typically includes Wenchang's population in addition to adjacent suburban areas.