Mornico al Serio is a comune (municipality) in the Province of Bergamo in the Italian region of Lombardy, located about 50 kilometres (31 mi) northeast of Milan and about 14 kilometres (9 mi) southeast of Bergamo. As of 31 December 2004, it had a population of 2,632 and an area of 7.0 square kilometres (2.7 mi2).