The following is a list of the 21 cantons of the Essonne department, in France, following the French canton reorganisation which came into effect in March 2015: Arpajon Athis-Mons Brétigny-sur-Orge Corbeil-Essonnes Dourdan Draveil Épinay-sous-Sénart Étampes Évry-Courcouronnes Gif-sur-Yvette Longjumeau Massy Mennecy Palaiseau Ris-Orangis Sainte-Geneviève-des-Bois Savigny-sur-Orge Les Ulis Vigneux-sur-Seine Viry-Châtillon Yerres References