Pierreville is a community in Nicolet-Yamaska Regional County Municipality, Quebec, located at the confluence of the Saint Lawrence and Saint-François rivers, at the edge of Lac Saint-Pierre. The population as of the Canada 2011 Census was 2,176.Pierreville faces the town of Saint-François-du-Lac across the Saint-François river, and lies at the junction of Route 132 and Route 226. Part of the Abenaki Indian reserve of Odanak is an enclave within the city limits of Pierreville.