| Date | Type | Code | Name |
|---|---|---|---|
| 1964-03-14 | Simple merger | 42111 → 42207 | Izieux → Saint-Chamond |
| 1964-03-14 | Simple merger | 42207 | Saint-Chamond |
| 1964-03-14 | Simple merger | 42244 → 42207 | Saint-Julien-en-Jarez → Saint-Chamond |
| 1964-03-14 | Simple merger | 42258 → 42207 | Saint-Martin-en-Coailleux → Saint-Chamond |
| 1943-01-01 | Creation | 42207 | Saint-Chamond |