 As of 31 December 2004, it had a population of 9,532 and an area of .The municipality of Vaiano contains the "frazioni" (subdivisions, mainly villages and hamlets) Fabio, Faltugnano, Gamberame, La Briglia, La Cartaia, La Foresta, La Tignamica, Le Fornaci, Meretto, Parmigno, Popigliano, Savignano, San Leonardo in Collina, Schignano and Sofignano.Vaiano borders the following municipalities