Millhaven is a Unincorporated area located in Lennox and Addington, Ontario and has an elevation of 78 meters.

• Latitude: 44° 11' 50'' North   (decimal: 44.1972222)
• Longitude: 76° 44' 23'' West   (decimal: -76.7397222)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Dispersed Rural Community
• Canadian Province/Territory: Ontario
• Elevation: 78 meters
• Location: Lennox and Addington
• Atlas of Canada Locator Map: Millhaven
• GPS Coordinate Locator Map: Millhaven Lat/Long