The department Pas-de-Calais has 7 arrondissements.
| Code ▲ | Name | Administrative seat | Com. |
|---|---|---|---|
| 621 | Arras | Arras | 357 |
| 622 | Béthune | Béthune | 104 |
| 623 | Boulogne-sur-Mer | Boulogne-sur-Mer | 74 |
| 624 | Montreuil | Montreuil-sur-Mer | 161 |
| 625 | Saint-Omer | Saint-Omer | 89 |
| 626 | Calais | Calais | 52 |
| 627 | Lens | Lens | 50 |