Demers Island is a Island located in Renfrew, Ontario and has an elevation of 111 meters.

• Latitude: 45° 55' 5'' North   (decimal: 45.9180555)
• Longitude: 77° 14' 29'' West   (decimal: -77.2413888)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 111 meters
• Location: Renfrew
• Atlas of Canada Locator Map: Demers Island
• GPS Coordinate Locator Map: Demers Island Lat/Long