Arcore is a comune in the Province of Monza and Brianza in the Italian region of Lombardy, located about 20 kilometres northeast of Milan. …Arcore is a comune in the Province of Monza and Brianza in the Italian region of Lombardy, located about 20 kilometres northeast of Milan. Arcore borders the following municipalities: Usmate Velate, Camparada, Lesmo, Biassono, Vimercate, Villasanta, Concorezzo.