Les Sables-d'Olonne
The arrondissement of La Roche-sur-Yon was created in 1804. At the January 2017 reorganisation of the arrondissements of Vendée, it received eight communes from the arrondissement of Les Sables-d'Olonne, and it lost 11 communes to the arrondissement of Fontenay-le-Comte. In January 2019 the commune Landeronde passed from the arrondissement of Les Sables-d'Olonne to the arrondissement of La Roche-sur-Yon.