San Luis Potosi's 2021 population is now estimated at 1,235,426. In 1950, the population of San Luis Potosi was 165,696. San Luis Potosi has grown by 18,862 since 2015, which represents a 1.55% 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 San Luis Potosi, which typically includes San Luis Potosi's population in addition to adjacent suburban areas.