The area of Castelletto Merli is 11.8 square kilometers.
The population of Castelletto Merli is 499.
The area of Castelletto Uzzone is 15.1 square kilometers.
The area of Castelletto Cervo is 15 square kilometers.
The area of Castelletto d'Erro is 4,700,000.0 square meters.
The area of Castelletto Monferrato is 9,400,000.0 square meters.
The area of Castelletto Stura is 16.6 square kilometers.
The area of Castelletto Molina is 3,000,000.0 square meters.
The area of Castelletto sopra Ticino is 14.6 square kilometers.
The area of Castelletto di Branduzzo is 11.5 square kilometers.
Castelletto Uzzone's population is 367.
Castelletto Cervo's population is 862.
The population of Castelletto d'Erro is 146.