This department has 887 communes.
| Code | Name | Population |
|---|---|---|
| 62193 | Calais | 67 571 |
| 62041 | Arras | 42 875 |
| 62160 | Boulogne-sur-Mer | 40 539 |
| 62498 | Lens | 32 920 |
| 62510 | Liévin | 30 063 |
This department has 43 cantons.
| Code | Name | Central office |
|---|---|---|
| 6201 | Aire-sur-la-Lys | Aire-sur-la-Lys |
| 6202 | Arras-1 | Arras |
| 6203 | Arras-2 | Arras |
| 6204 | Arras-3 | Arras |
| 6205 | Auchel | Auchel |
This department has 7 departmental arrondissements.
| Code | Name | Administrative seat |
|---|---|---|
| 621 | Arras | Arras |
| 622 | Béthune | Béthune |
| 623 | Boulogne-sur-Mer | Boulogne-sur-Mer |
| 624 | Montreuil | Montreuil-sur-Mer |
| 625 | Saint-Omer | Saint-Omer |