Guatemala City's 2026 population is now estimated at 3,304,800. In 1950, the population of Guatemala City was 361,264. Guatemala City has grown by 75,060 in the last year, which represents a 2.32% 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 Guatemala City, which typically includes Guatemala City's population in addition to adjacent suburban areas.