The canton Saint-Gilles has 8 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 30258 | Saint-Gilles | 14 734 |
| 30169 | Milhaud | 6 297 |
| 30075 | Caveirac | 4 408 |
| 30082 | Clarensac | 4 386 |
| 30128 | Générac | 4 046 |
| 30138 | Langlade | 2 329 |
| 30249 | Saint-Dionisy | 1 058 |
| 30245 | Saint-Côme-et-Maruéjols | 798 |