| 2026-01-01 | Deletion of a delegated commune | 86021 → 86123 | Benassay → Boivre-la-Vallée |
| 2026-01-01 | Deletion of a delegated commune | 86056 → 86123 | La Chapelle-Montreuil → Boivre-la-Vallée |
| 2026-01-01 | Deletion of a delegated commune | 86123 | Lavausseau → Boivre-la-Vallée |
| 2026-01-01 | Deletion of a delegated commune | 86166 → 86123 | Montreuil-Bonnin → Boivre-la-Vallée |
| 2019-01-01 | Deletion | 86123 | Lavausseau |
| 2019-01-01 | Creation of a new commune | 86021 → 86123 | Benassay → Boivre-la-Vallée |
| 2019-01-01 | Creation of a new commune | 86056 → 86123 | La Chapelle-Montreuil → Boivre-la-Vallée |
| 2019-01-01 | Creation of a new commune | 86123 | Lavausseau → Boivre-la-Vallée |
| 2019-01-01 | Creation of a new commune | 86123 | Lavausseau |
| 2019-01-01 | Creation of a new commune | 86166 → 86123 | Montreuil-Bonnin → Boivre-la-Vallée |
| 1943-01-01 | Creation | 86123 | Lavausseau |