Lainate is a comune in the Province of Milan in the Italian region Lombardy, located about 15 kilometres northwest of Milan. As of 31 December 2004, it had a population of 24,146 and an area of 12.9 square kilometres.The municipality of Lainate contains the frazioni Barbaiana, Grancia, and Pagliera.Lainate borders the following municipalities: Caronno Pertusella, Origgio, Garbagnate Milanese, Nerviano, Arese, Rho, Pogliano Milanese. Lainate is home to "Villa Litta", a popular tourist attraction, and the headquarters of the confectionery company Perfetti Van Melle.