San Piero a Sieve is an urban centre and frazione of the comune of Scarperia e San Piero, located in the Metropolitan City of Florence, in Tuscany, ItalyIt was an Italian municipality, with a population of 4,065 in 2010, until 1 January 2014, when it was merged with Scarperia to form the new Municipality of Scarperia e San Piero. From Wikipedia