La Grande Île is a Island located in Carignan; La Vallée-du-Richelieu, Quebec.

• Latitude: 45° 28' 37'' North   (decimal: 45.4769444)
• Longitude: 73° 16' 48'' West   (decimal: -73.28)
• Topography Feature Category: Island
• Geographical Feature: Île / Ile
• Canadian Province/Territory: Quebec
• Location: Carignan; La Vallée-du-Richelieu
• GPS Coordinate Locator Map: La Grande Île Lat/Long