Castelletto Monferrato (also Castelletto Scazzoso of Piedmontese Castrum Scatiosorum or CASTLET mònfrà ) is a municipality with 1575 ( as at 31 December 2012) a population of Alessandria in the Italian province (AL ), Region Piedmont.
The municipality consists of the villages Giardinetto and Gerlotti. The neighboring municipalities are Alessandria, Quargnento and San Salvatore Monferrato.
The village lies at an altitude of 197 m above sea level. The municipality covers an area of 9.43 km ².
Church and square
Church of San Siro
Detail church of San Siro