Saint-Etienne's 2021 population is now estimated at 375,652. In 1950, the population of Saint-Etienne was 352,055. Saint-Etienne has grown by 773 since 2015, which represents a 0.21% 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 Saint-Etienne, which typically includes Saint-Etienne's population in addition to adjacent suburban areas.