Casal di Principe is a comune (municipality) situated in the Province of Caserta within the Campania region of Italy. It is located approximately 25 kilometres northwest of Naples and about 20 kilometres southwest of Caserta.
The town has a population of roughly 21,000 people. It is positioned within the territory of Agro Aversano, a rural area comprising 19 different comuni, and maintains a direct link to the neighboring comune of San Cipriano d'Aversa.