Mascouche is an off-island suburb of Montreal, in southern Quebec, Canada. The city is located on the Mascouche River within the Les Moulins Regional County Municipality and has a population of 42,491, ranking 30th among Quebec municipalities.The name comes from Algonquin word maskutchew meaning "bear plain" in singular. Compare plular form to maskutew for the Les Maskoutains Regional County Municipality located nearby.