Trevi (Latin: Trebiae), an old town and comune of Italy, in the province of Perugia in east central Umbria, 42°53N 12°45E, at 424 meters (1391 ft) above sea-level on the lower part of Mt. Serano above the wide plain of the Clitunno river. It is 10 km (6 mi) S.S.E. of Foligno and 20 km (12 mi) N. of Spoleto. The 2003 count of people by the government said that there were 7800 people living in the "comune": about half of the people live in the town and the other people live in the country near town. The "frazioni" of Trevi (the smaller towns that belong to Trevi) are Borgo, Bovara, Cannaiola, Coste, Pigge, Manciano, Matigge, Parrano, Picciche, S. Lorenzo, S. Maria in Valle.