Castelletto Uzzone's population is 367.
Castelletto Cervo's population is 862.
The population of Castelletto Merli is 499.
The population of Castelletto d'Erro is 146.
The population of Castelletto Monferrato is 1,511.
Castelletto Stura's population is 1,179.
The population of Castelletto Molina is 184.
Castelletto sopra Ticino's population is 10,000.
The population of Castelletto di Branduzzo is 1,041.
The area of Castelletto Uzzone is 15.1 square kilometers.
The area of Castelletto Cervo is 15 square kilometers.
The area of Castelletto Merli is 11.8 square kilometers.
The area of Castelletto d'Erro is 4,700,000.0 square meters.