The canton Auchel has 9 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 62048 | Auchel | 10 051 |
| 62270 | Divion | 6 766 |
| 62555 | Marles-les-Mines | 5 411 |
| 62194 | Calonne-Ricouart | 5 369 |
| 62217 | Cauchy-à-la-Tour | 2 593 |
| 62197 | Camblain-Châtelain | 1 762 |
| 62532 | Lozinghem | 1 256 |
| 62642 | Ourton | 719 |
| 62269 | Diéval | 709 |