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Montourtier is a former commune of 326 people (2009). It is found in the region Pays de la Loire in the Mayenne department in the northwest of France. On 1 January 2019, the commune was unified with Montsûrs-Saint-Céneré, Deux-Évailles and Saint-Ouën-des-Vallons, and the new municipality took the name of Montsûrs.
- Arrêté préfectoral 12 December 2018 (in French)