Arequipa's 2026 population is now estimated at 996,218. In 1950, the population of Arequipa was 128,309. Arequipa has grown by 12,503 in the last year, which represents a 1.27% 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 Arequipa, which typically includes Arequipa's population in addition to adjacent suburban areas.