Lac Demerest is a Lake located in Lac-Marguerite; Antoine-Labelle, Quebec and has an elevation of 246 meters.

• Latitude: 46° 56' 52'' North   (decimal: 46.9477778)
• Longitude: 75° 54' 12'' West   (decimal: -75.9033333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 246 meters
• Location: Lac-Marguerite; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Demerest
• GPS Coordinate Locator Map: Lac Demerest Lat/Long