Walnut is a Unincorporated area located in Lambton, Ontario and has an elevation of 226 meters.

• Latitude: 42° 52' 54'' North   (decimal: 42.8816666)
• Longitude: 81° 53' 35'' West   (decimal: -81.8930555)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Dispersed Rural Community
• Canadian Province/Territory: Ontario
• Elevation: 226 meters
• Location: Lambton
• Atlas of Canada Locator Map: Walnut
• GPS Coordinate Locator Map: Walnut Lat/Long