Italy metropolitan cities and Functional urban areas population (January 2016 and FUA 2014)

Reference 1: Region, Area (km²), Population January 2016 and FUA Population 2014.

Reference 2: Rome, Milan, Naples, Turin, Palermo, Bari, Catania, Florence, Bologna, Genoa, Venice, Messina, Reggio Calabria and Cagliari.

Source: http://en.wikipedia.org/wiki/Repubblica_Italiana