Marthaville is a Unincorporated area located in Lambton, Ontario and has an elevation of 202 meters.

• Latitude: 42° 54' 23'' North   (decimal: 42.9063888)
• Longitude: 82° 10' 3'' West   (decimal: -82.1675000)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Dispersed Rural Community
• Canadian Province/Territory: Ontario
• Elevation: 202 meters
• Location: Lambton
• Atlas of Canada Locator Map: Marthaville
• GPS Coordinate Locator Map: Marthaville Lat/Long