Castleton is a Unincorporated area located in Northumberland, Ontario and has an elevation of 194 meters.

• Latitude: 44° 5' 36'' North   (decimal: 44.0933333)
• Longitude: 77° 56' 19'' West   (decimal: -77.9386111)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Compact Rural Community
• Canadian Province/Territory: Ontario
• Elevation: 194 meters
• Location: Northumberland
• Atlas of Canada Locator Map: Castleton
• GPS Coordinate Locator Map: Castleton Lat/Long