Saint-Hyacinthe, Qué, City, pop 38 739 (2001c), 38 995 A (1996c), 39 292 (1991c), 38 603 (1986c), area 37.46 km2, inc 1857, is situated in the St Lawrence River plain on the Yamaska River, about 60 km E of Montréal. From the beginning, St-Hyacinthe has been a commercial and service centre for a thriving agricultural region, known for its impressive religious and educational institutions.