Filadelfia is a comune in the Province of Vibo Valentia in the Italian region Calabria, located about 30 kilometres southwest of Catanzaro and about 20 kilometres northeast of Vibo Valentia. The city was built in 1783 by the people of Castelmonardo, on land that was 6 kilometres from their city that was destroyed by an earthquake. It was named after the city of Philadelphia in the United States. As of 31 December 2013, it had a population of 5,500 and an area of 30 square kilometres.