Herrons Mills is a Unincorporated area located in Lanark, Ontario and has an elevation of 156 meters.

• Latitude: 45° 3' 1'' North   (decimal: 45.0502777)
• Longitude: 76° 24' 10'' West   (decimal: -76.4027777)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Dispersed Rural Community
• Canadian Province/Territory: Ontario
• Elevation: 156 meters
• Location: Lanark
• Atlas of Canada Locator Map: Herrons Mills
• GPS Coordinate Locator Map: Herrons Mills Lat/Long