This region has 8 departments.
| Code | Name | Administrative seat |
|---|---|---|
| 75 | Paris | Paris |
| 77 | Seine-et-Marne | Melun |
| 78 | Yvelines | Versailles |
| 91 | Essonne | Évry-Courcouronnes |
| 92 | Hauts-de-Seine | Nanterre |
This region has 1266 communes.
| Code | Name | Population |
|---|---|---|
| 75056 | Paris | 2 103 778 |
| 93066 | Saint-Denis | 149 077 |
| 92012 | Boulogne-Billancourt | 119 019 |
| 93048 | Montreuil | 111 934 |
| 95018 | Argenteuil | 106 130 |
This region has 178 cantons.
| Code | Name | Central office |
|---|---|---|
| 7599 | Paris | Paris |
| 7701 | Champs-sur-Marne | Champs-sur-Marne |
| 7702 | Chelles | Chelles |
| 7703 | Claye-Souilly | Claye-Souilly |
| 7704 | Combs-la-Ville | Combs-la-Ville |
This region has 25 arrondissements.
| Code | Name | Administrative seat |
|---|---|---|
| 751 | Paris | Paris |
| 771 | Meaux | Meaux |
| 772 | Melun | Melun |
| 773 | Provins | Provins |
| 774 | Fontainebleau | Fontainebleau |
This region has 8 departmental collectivities.