The Loing river gives its name to the following "communes": Sainte-Colombe-sur-Loing, Dammarie-sur-Loing, Conflans-sur-Loing, Châlette-sur-Loing, Fontenay-sur-Loing, Souppes-sur-Loing, La Madeleine-sur-Loing, Bagneaux-sur-Loing, Grez-sur-Loing, Montigny-sur-Loing et Moret-sur-Loing.