|Comune di Castelforte|
|• Mayor||Giampiero Forte|
|• Total||29 km2 (11 sq mi)|
|Elevation||130 m (430 ft)|
|Population (1 June 2009)|
|• Density||160/km2 (400/sq mi)|
|Time zone||CET (UTC+1)|
|• Summer (DST)||CEST (UTC+2)|
|Patron saint||st. John the Baptist|
|Saint day||June 24|
Castelforte was founded most likely before the year 1000 AD. According to some scholars, it occupies the ruins of the ancient Auruncan town of Vescia, destroyed by the Romans in 340 BC (the commune includes the ruins of the large Terme Vescinae baths, in what is now the frazione of Suio).
The medieval town (Castrum Forte, meaning "Strong Castle") was a typical stronghold (probably built to counter the Saracen presence at the Garigliano) with a line of wall and rounded towers; the nearby Suio was defended by a castle. Castrum Forte's population was increased in 1320 when people from Suio moved here to flee malaria.
People from Castelforte formed two companies which fought alongside Fra' Diavolo in resistance against the French Napoleonic troops in 1798–99. This caused them to besiege and stomrm the town in the latter year. In 1807 Suio, now nearly depopulated, was aggregated to the municipality.
Media related to Castelforte at Wikimedia Commons