The former municipality contained the frazioni (subdivisions, mainly villages and hamlets) Santa Croce, Duvredo, Vergonzo, Tignerone, Cillà, Villa, Sesto, Biè, Comighello, Bono, Cares, Ponte Arche (partly in Stenico, united with the urban area of Bleggio Inferiore), and Val d'Algone.
Bleggio Inferiore, located about 20 km west of Trento, bordered with the following municipalities: Ragoli, Giustino, Massimeno, San Lorenzo in Banale, Bocenago, Stenico, Dorsino, Lomaso, Tione di Trento, Bleggio Superiore, and Fiavè.