Reggio Emilia's 2025 population is now estimated at 380,283. In 1950, the population of Reggio Emilia was 212,920. Reggio Emilia has grown by 1,959 in the last year, which represents a 0.52% 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 Reggio Emilia, which typically includes Reggio Emilia's population in addition to adjacent suburban areas.