| 2020-03-01 | Deletion of a delegated commune | 39023 → 39378 | L'Aubépin → Les Trois-Châteaux |
| 2020-03-01 | Deletion of a delegated commune | 39135 → 39378 | Chazelles → Les Trois-Châteaux |
| 2020-03-01 | Deletion of a delegated commune | 39378 | Nanc-lès-Saint-Amour → Les Trois-Châteaux |
| 2020-03-01 | Deletion of a delegated commune | 39484 → 39378 | Saint-Jean-d'Étreux → Les Trois-Châteaux |
| 2019-01-01 | Deletion | 39378 | Les Trois Châteaux |
| 2019-01-01 | Creation of a new commune | 39378 | Les Trois Châteaux → Les Trois-Châteaux |
| 2019-01-01 | Creation of a new commune | 39484 → 39378 | Saint-Jean-d'Étreux → Les Trois-Châteaux |
| 2016-04-01 | Deletion | 39378 | Nanc-lès-Saint-Amour |
| 2016-04-01 | Creation of a new commune | 39023 → 39378 | L'Aubépin → Les Trois Châteaux |
| 2016-04-01 | Creation of a new commune | 39135 → 39378 | Chazelles → Les Trois Châteaux |
| 2016-04-01 | Creation of a new commune | 39378 | Nanc-lès-Saint-Amour → Les Trois Châteaux |
| 2016-04-01 | Creation of a new commune | 39378 | Nanc-lès-Saint-Amour |
| 1971-08-12 | Creation | 39378 | Nanc-lès-Saint-Amour |
| 1971-08-12 | Name change | 39378 | Nanc → Nanc-lès-Saint-Amour |
| 1943-01-01 | Creation | 39378 | Nanc |