Les Grès is a Unincorporated area located in Saint-Étienne-des-Grès; Maskinongé, Quebec.

• Latitude: 46° 27' 45'' North   (decimal: 46.4625268)
• Longitude: 72° 46' 18'' West   (decimal: -72.7717871)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Lieu-dit
• Canadian Province/Territory: Quebec
• Location: Saint-Étienne-des-Grès; Maskinongé
• Atlas of Canada Locator Map: Les Grès
• GPS Coordinate Locator Map: Les Grès Lat/Long