The canton Rive-de-Gier has 11 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 42186 | Rive-de-Gier | 15 242 |
| 42123 | Lorette | 4 983 |
| 42103 | La Grand-Croix | 4 947 |
| 42271 | Saint-Paul-en-Jarez | 4 699 |
| 42225 | Genilac | 3 839 |
| 42259 | Saint-Martin-la-Plaine | 3 764 |
| 42242 | Saint-Joseph | 1 996 |
| 42053 | Châteauneuf | 1 724 |
| 42093 | Farnay | 1 355 |
| 42307 | Tartaras | 958 |
| 42083 | Dargoire | 524 |