Merca's 2021 population is now estimated at 696,510. In 1950, the population of Merca was 30,738. Merca has grown by 30,140 since 2015, which represents a 4.52% 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 Merca, which typically includes Merca's population in addition to adjacent suburban areas.