St. Elmo is a Unincorporated area located in Glengarry, Ontario and has an elevation of 84 meters.

• Latitude: 45° 18' 44'' North   (decimal: 45.3122222)
• Longitude: 74° 52' 27'' West   (decimal: -74.8741666)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Dispersed Rural Community
• Canadian Province/Territory: Ontario
• Elevation: 84 meters
• Location: Glengarry
• Atlas of Canada Locator Map: St. Elmo
• GPS Coordinate Locator Map: St. Elmo Lat/Long