 The municipality of Sainte-Thècle shares borders with Saint-Tite to the south, Grandes-Piles to the southwest, Saint-Roch-de-Mékinac also to the south-west, Trois-Rives to the north, Lac-aux-Sables also to the north, and Saint-Adelphe to the southeast.Most of Sainte-Thècle is part of the Batiscan River watershed, with the exception of a two smalls area in its northeastern territories near Trois-Rives) and Missionary Lake.Thighest Laurentian Mountains of Middle Mauricie are located in the northwestern part of the municipality of Sainte-Thècle.