Senago is a comune in the Metropolitan City of Milan in the Italian region Lombardy, located about 13 kilometres north of Milan. As of 30 November 2017, it had a population of 21.519 and an area of 8.6 square kilometres. Senago borders the following municipalities: Limbiate, Cesate, Paderno Dugnano, Garbagnate Milanese, Bollate. The Villa San Carlo Borromeo is located in Senago.