| Date | Type | Code | Name |
|---|---|---|---|
| 2023-01-01 | Creation of a new commune | 51457 | Reuil → Cœur-de-la-Vallée |
| 2023-01-01 | Creation of a new commune | 51457 | Reuil |
| 2023-01-01 | Deletion | 51457 | Reuil |
| 2023-01-01 | Creation of a new commune | 51063 → 51457 | Binson-et-Orquigny → Cœur-de-la-Vallée |
| 2023-01-01 | Creation of a new commune | 51637 → 51457 | Villers-sous-Châtillon → Cœur-de-la-Vallée |
| 1943-01-01 | Creation | 51457 | Reuil |