Niigata's 2023 population is now estimated at 797,865. In 1950, the population of Niigata was 159,000. Niigata has grown by -1,967 in the last year, which represents a -0.25% 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 Niigata, which typically includes Niigata's population in addition to adjacent suburban areas.