Port Of Spain's 2021 population is now estimated at 544,305. In 1950, the population of Port Of Spain was 114,179. Port Of Spain has grown by 98 since 2015, which represents a 0.02% 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 Port Of Spain, which typically includes Port Of Spain's population in addition to adjacent suburban areas.