The first economic activities in the region started in the mid-18th century with forest exploitation and agriculture. The place was first named "Concession-du-Lac" and "Lac-Saint-François" after the adjacent lake. Subsequently, it was also known as "Longueuil-sur-le-Lac" (because it was part of the
seigneury of New Longueuil, and "Moulin-Biron" (named after the owner of the first sawmill built near the wharf). Saint-Zotique officially became parish near 1849 when it was separated from the parish of
Saint-Polycarpe located a few kilometres to the north. In 1854, its post office opened, and a year later in 1855, the Parish Municipality of Saint-Zotique was formed. In 1913, the village itself split off from the parish municipality to form the Village Municipality of Saint-Zotique, and eventually the two municipalities merged again to form a new village municipality in 1967. On 4 April 2009, it changed its status to just municipality and in 2023, it became a city. ==Geography==