Château-Gontier is a former commune of 11 131 people (as of 1999). It is found in the region Pays de la Loire in the Mayenne department in the northwest of France. On 1 January 2019, it was merged into the new commune of Château-Gontier-sur-Mayenne.
References[change | change source]
- Arrêté préfectoral 14 November 2018 (in French)