Lac Saint-Onge is a Lake located in Les Escoumins; La Haute-Côte-Nord, Quebec and has an elevation of 108 meters.

• Latitude: 48° 24' 43'' North   (decimal: 48.4119685)
• Longitude: 69° 24' 43'' West   (decimal: -69.4119983)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 108 meters
• Location: Les Escoumins; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Lac Saint-Onge
• GPS Coordinate Locator Map: Lac Saint-Onge Lat/Long