Al-Quwaysimah's 2021 population is now estimated at 397,941. In 1950, the population of Al-Quwaysimah was 3,122. Al-Quwaysimah has grown by 12,653 since 2015, which represents a 3.28% 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 Al-Quwaysimah, which typically includes Al-Quwaysimah's population in addition to adjacent suburban areas.