Montval-sur-Loir is a commune in the Sarthe department in the region of Pays de la Loire in north-western France. The municipality was established on 1 October 2016 and consists of the former communes of Château-du-Loir, Montabon and Vouvray-sur-Loir. Population See also Communes of the Sarthe department References Communes of Sarthe Maine (province)