Kuantan's 2025 population is now estimated at 558,940. In 1950, the population of Kuantan was 41,445. Kuantan has grown by 10,725 in the last year, which represents a 1.96% 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 Kuantan, which typically includes Kuantan's population in addition to adjacent suburban areas.