Population (2006): 3 780
Surface area: 182,66 sq.km
Mayor: Réal Thibault
The municipality of Saint-Antonin is advantageously located along highway 85 (the trans-Canadian highway) close to Rivière-du-Loup. This accessibility explains in good part the major residential development of the last several years. In addition to agriculture and forestry, Saint-Antonin also has many small and mid-size commercial and industrial businesses established close to highway 85. Many borrow pits and sand pits exploit the moraine which stretches from the western part of the territory up to Saint-Modeste.
The Petit-Témis inter-provincial linear park intersects the urban sector of Saint-Antonin and allows its residents access, in summer by bicycle and in winter by snowmobile, to the town of Rivière-du-Loup to the North and a vast forested territory to the south.