Casarile (Lombard: Casaril [kazaˈriːl]) is a comune (municipality) in the Province of Milan in the Italian region Lombardy, located about 15 kilometres (9 mi) southwest of Milan. As of 31 December 2004, it had a population of 3,637 and an area of 7.3 square kilometres (2.8 sq mi).Casarile borders the following municipalities: Lacchiarella, Vernate, Binasco, Rognano, Giussago.