Casalmaiocco is a comune, or municipality, situated in the Province of Lodi within the Lombardy region of northern Italy. It is located approximately 25 kilometres (16 mi) southeast of Milan and about 15 kilometres (9 mi) north of the city of Lodi.
The town serves as a local administrative center in the Lombardy region, positioned within the geographical vicinity of major urban hubs like Milan and Lodi.