Poste-Canton-Blais is a Unincorporated area located in Lac-Casault; La Matapédia, Quebec.

• Latitude: 48° 33' 54'' North   (decimal: 48.5650462)
• Longitude: 67° 10' 44'' West   (decimal: -67.1788739)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Lieu-dit
• Canadian Province/Territory: Quebec
• Location: Lac-Casault; La Matapédia
• Atlas of Canada Locator Map: Poste-Canton-Blais
• GPS Coordinate Locator Map: Poste-Canton-Blais Lat/Long