Loum's 2025 population is now estimated at 623,336. In 1950, the population of Loum was 4,802. Loum has grown by 24,094 in the last year, which represents a 4.02% 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 Loum, which typically includes Loum's population in addition to adjacent suburban areas.