Mercury Island is a Island located in Northumberland, New Brunswick and has an elevation of 53 meters.

• Latitude: 46° 35' 10'' North   (decimal: 46.5859793)
• Longitude: 65° 56' 46'' West   (decimal: -65.9460891)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: New Brunswick
• Elevation: 53 meters
• Location: Northumberland
• Atlas of Canada Locator Map: Mercury Island
• GPS Coordinate Locator Map: Mercury Island Lat/Long