| Date | Type | Code | Name |
|---|---|---|---|
| 2025-02-12 | Deletion of a delegated commune | 08439 | Tannay → Tannay-le-Mont-Dieu |
| 2025-01-01 | Deletion | 08439 | Tannay |
| 2025-01-01 | Creation of a new commune | 08300 → 08439 | Le Mont-Dieu → Tannay-le-Mont-Dieu |
| 2025-01-01 | Creation of a new commune | 08439 | Tannay |
| 2025-01-01 | Creation of a new commune | 08439 | Tannay → Tannay-le-Mont-Dieu |
| 1943-01-01 | Creation | 08439 | Tannay |