Rock Mills is a Unincorporated area located in Grey, Ontario and has an elevation of 433 meters.

• Latitude: 44° 17' 22'' North   (decimal: 44.2894444)
• Longitude: 80° 29' 43'' West   (decimal: -80.4952777)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Dispersed Rural Community
• Canadian Province/Territory: Ontario
• Elevation: 433 meters
• Location: Grey
• Atlas of Canada Locator Map: Rock Mills
• GPS Coordinate Locator Map: Rock Mills Lat/Long