Xinzhu's 2026 population is now estimated at 470,241. In 1950, the population of Xinzhu was 46,438. Xinzhu has grown by 2,788 in the last year, which represents a 0.6% 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 Xinzhu, which typically includes Xinzhu's population in addition to adjacent suburban areas.