Castel Sant'Angelo is a (municipality) in the Province of Rieti in the Italian region of Lazio, located about northeast of Rome and about east of Rieti.
Castel Sant'Angelo borders the following municipalities: Borgo Velino, Cittaducale, Micigliano, Rieti.
The Lake of Cutilia is located in the frazione of Vasche.
Castel Sant'Angelo has a station on the TerniâÂÂSulmona railway, with trains to Terni, Rieti and L'Aquila.