De Saint-Just is a Unincorporated area located in Rivière-Ouelle; Kamouraska, Quebec and has an elevation of 29 meters.

• Latitude: 47° 27' 7'' North   (decimal: 47.4519666)
• Longitude: 70° 0' 6'' West   (decimal: -70.0017279)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Hameau
• Canadian Province/Territory: Quebec
• Elevation: 29 meters
• Location: Rivière-Ouelle; Kamouraska
• Atlas of Canada Locator Map: De Saint-Just
• GPS Coordinate Locator Map: De Saint-Just Lat/Long