This canton has 18 communes.
| Code | Name | Population |
|---|---|---|
| 12270 | Sévérac d'Aveyron | 4 026 |
| 12200 | Rivière-sur-Tarn | 1 069 |
| 12237 | Saint-Laurent-d'Olt | 623 |
| 12213 | Saint-Beauzély | 550 |
| 12296 | Viala-du-Tarn | 529 |
This canton has 1 associated/delegated commune.
| Code | Name |
|---|---|
| 12270 | Sévérac-le-Château |