Statistics Canada counted 51,183 residents in Mascouche in 2021, 9.6% more than in 2016 while Quebec as a whole grew by 4.1%, and 19,981 occupied private dwellings, up 11.6%, over 106.89 km². The city announces 54,540 inhabitants on 106.64 km² and projects 58,805 for 2031, with an average age of 40 and an agricultural zone covering 73% of the territory. The breakdown by dwelling type goes back to the 2016 census: of 17,900 occupied private dwellings, 62.0% were single-detached houses, 25.2% apartments in buildings under five storeys, 5.6% semi-detached houses, 4.5% duplex units and 2.4% row houses — not one unit, on the other hand, in a tower of five storeys or more, and 79.5% owner-occupied.
The urban plan cuts that territory into two halves linked by the Grand Coteau green corridor, Bas-Mascouche and Haut-Mascouche, which the city logo itself pictures as two terraces. The lower terrace lines up the town's first homes, one-storey detached houses; the upper terrace rests on lots served by the water main only; the countryside sector spreads lots of 1,500 to 3,000 m²; and the agroforestry area, north of the rivière Mascouche, takes in Lac-Samson and the Domaine Guilbeault. In the village core, where chemin Sainte-Marie meets montée Masson, the oldest houses date from the 18th century. The new Mascouche sector comes down to two projects: Les Cours de l'Étang and La Seigneurie du Chêne. From one end of that list to the other, the question asked over the phone never changes — how much width is left between the house and the street?
Statistics Canada (2021 census), Portrait territorial de la CMM, 2021 edition (2016 census data), urban plan by-law 1085 and the “Portrait de la ville” page of mascouche.ca, consulted August 16, 2026.