| 2019-01-01 | Creation of a new commune | 53062 | Château-Gontier |
| 2019-01-01 | Creation of a new commune | 53062 | Château-Gontier → Château-Gontier-sur-Mayenne |
| 2019-01-01 | Deletion | 53062 | Château-Gontier |
| 2019-01-01 | Creation of a new commune | 53014 → 53062 | Azé → Château-Gontier-sur-Mayenne |
| 2019-01-01 | Creation of a new commune | 53215 → 53062 | Saint-Fort → Château-Gontier-sur-Mayenne |
| 2006-05-01 | Association merger converted to a simple merger | 53062 | Château-Gontier |
| 2006-05-01 | Association merger converted to a simple merger | 53024 → 53062 | Bazouges → Château-Gontier |
| 1990-01-01 | Association merger | 53062 | Château-Gontier |
| 1990-01-01 | Association merger | 53024 → 53062 | Bazouges → Château-Gontier |
| 1943-01-01 | Creation | 53062 | Château-Gontier |