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Château-d'Olonne is a former commune. It is found in the region Pays de la Loire in the Vendée department in the west of France. On 1 January 2019, it became a part of the commune of Les Sables-d'Olonne.[1]

References[change | change source]

  1. Arrêté préfectoral 17 August 2018 (in French)