Couëtron-au-Perche is a commune in the department of Loir-et-Cher, central France. The municipality was established on 1 January 2018 by merger of the former communes of Souday (the seat), Arville, Oigny, Saint-Agil and Saint-Avit.Arrêté préfectoral 10 July 2017
See also Communes of the Loir-et-Cher department
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