Heredia's 2025 population is now estimated at 359,492. In 1950, the population of Heredia was 14,904. Heredia has grown by 4,171 in the last year, which represents a 1.17% 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 Heredia, which typically includes Heredia's population in addition to adjacent suburban areas.