Castel Volturno is a comune located in the Province of Caserta within the Campania region of Italy. It is situated on the Volturno river, approximately 35 kilometres northwest of Naples and 35 kilometres west of Caserta.
The municipality has a population of nearly 30,000 residents. In addition to the permanent resident population, the area hosts an estimated number of more than 15,000 undocumented immigrants.