Lac-Masson is a Unincorporated area located in Sainte-Marguerite¿Estérel; Les Pays-d'en-Haut, Quebec.

• Latitude: 46° 1' 53'' North   (decimal: 46.0313888)
• Longitude: 74° 3' 29'' West   (decimal: -74.0580555)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Bureau de poste
• Canadian Province/Territory: Quebec
• Location: Sainte-Marguerite¿Estérel; Les Pays-d'en-Haut
• Atlas of Canada Locator Map: Lac-Masson
• GPS Coordinate Locator Map: Lac-Masson Lat/Long