Preston Island is a Island located in Thunder Bay, Ontario and has an elevation of 271 meters.

• Latitude: 49° 42' 11'' North   (decimal: 49.7030555)
• Longitude: 88° 8' 33'' West   (decimal: -88.1424999)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 271 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Preston Island
• GPS Coordinate Locator Map: Preston Island Lat/Long