The following is a list of the 21 cantons of the Yonne department, in France, following the French canton reorganisation which came into effect in March 2015: Auxerre-1 Auxerre-2 Auxerre-3 Auxerre-4 Avallon Brienon-sur-Armançon Chablis Charny Orée de Puisaye Cœur de Puisaye Gâtinais en Bourgogne Joigny Joux-la-Ville Migennes Pont-sur-Yonne Saint-Florentin Sens-1 Sens-2 Thorigny-sur-Oreuse Tonnerrois Villeneuve-sur-Yonne Vincelles References