Merca's 2025 population is now estimated at 828,008. In 1950, the population of Merca was 30,738. Merca has grown by 34,463 in the last year, which represents a 4.34% 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.