La Colonie-du-Vingt-et-Un is a Unincorporated area located in Mont-Alexandre; Le Rocher-Percé, Quebec.

• Latitude: 48° 29' 54'' North   (decimal: 48.4983892)
• Longitude: 64° 49' 10'' West   (decimal: -64.8193313)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Lieu-dit
• Canadian Province/Territory: Quebec
• Location: Mont-Alexandre; Le Rocher-Percé
• Atlas of Canada Locator Map: La Colonie-du-Vingt-et-Un
• GPS Coordinate Locator Map: La Colonie-du-Vingt-et-Un Lat/Long