Niamey's 2025 population is now estimated at 1,561,490. In 1950, the population of Niamey was 24,370. Niamey has grown by 65,230 in the last year, which represents a 4.36% 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 Niamey, which typically includes Niamey's population in addition to adjacent suburban areas.