Heredia's 2026 population is now estimated at 363,759. In 1950, the population of Heredia was 14,904. Heredia has grown by 4,267 in the last year, which represents a 1.19% 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.