| Date | Type | Code | Name |
|---|---|---|---|
| 2015-12-15 | Creation of a new commune | 49212 | Montjean-sur-Loire |
| 2015-12-15 | Creation of a new commune | 49212 → 49244 | Montjean-sur-Loire → Mauges-sur-Loire |
| 2015-12-15 | Deletion | 49212 | Montjean-sur-Loire |
| 1956-08-29 | Name change | 49212 | Montjean → Montjean-sur-Loire |
| 1956-08-29 | Creation | 49212 | Montjean-sur-Loire |
| 1943-01-01 | Creation | 49212 | Montjean |