This department has 194 communes.
| Code | Name | Population |
|---|---|---|
| 91228 | Évry-Courcouronnes | 66 919 |
| 91174 | Corbeil-Essonnes | 54 471 |
| 91377 | Massy | 51 729 |
| 91589 | Savigny-sur-Orge | 37 601 |
| 91477 | Palaiseau | 37 471 |
This department has 23 cantons.
| Code | Name | Central office |
|---|---|---|
| 9101 | Arpajon | Arpajon |
| 9102 | Athis-Mons | Athis-Mons |
| 9103 | Brétigny-sur-Orge | Brétigny-sur-Orge |
| 9104 | Corbeil-Essonnes | Corbeil-Essonnes |
| 9105 | Dourdan | Dourdan |