Montaigu-Vendée is a commune in the Vendée department in the Pays de la Loire region in western France. The municipality was established o…Montaigu-Vendée is a commune in the Vendée department in the Pays de la Loire region in western France. The municipality was established on 1 January 2019 by the merger of the communes of Boufféré, La Guyonnière, Montaigu, Saint-Georges-de-Montaigu and Saint-Hilaire-de-Loulay.