La Forteresse () is a commune in the Isère department in southeastern France.
Geography La Forteresse is located in the valley of Rival, and is about 550 meters away from Saint-Étienne-de-Saint-Geoirs.
History La Forteresse belonged until 1929 to the canton of Tullins. Then, on 17 December 1929, it was attached to the canton of Saint-Étienne-de-Saint-Geoirs. Since 2015, it is part of the canton of Bièvre.
Population
See also Communes of the Isère department
References