Plaine-et-Vallées (, literally Plain and Valleys) is a commune in the Deux-Sèvres department in western France. It was established on 1 January 2019 by merger of the former communes of Oiron (the seat), Brie, Saint-Jouin-de-Marnes and Taizé-Maulais.Arrêté préfectoral 7 November 2018
Population Population data refer to the area corresponding with the commune as of January 2025.
See also Communes of the Deux-Sèvres department
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