| 2019-01-01 | Creation of a new commune | 89420 | Treigny |
| 2019-01-01 | Creation of a new commune | 89420 | Treigny → Treigny-Perreuse-Sainte-Colombe |
| 2019-01-01 | Deletion | 89420 | Treigny |
| 2019-01-01 | Creation of a new commune | 89293 → 89420 | Perreuse → Treigny-Perreuse-Sainte-Colombe |
| 2019-01-01 | Creation of a new commune | 89340 → 89420 | Sainte-Colombe-sur-Loing → Treigny-Perreuse-Sainte-Colombe |
| 1977-01-01 | Restoration | 89420 | Treigny |
| 1977-01-01 | Restoration | 89420 → 89340 | Treigny → Sainte-Colombe-sur-Loing |
| 1973-01-01 | Association merger | 89420 | Treigny |
| 1973-01-01 | Association merger | 89293 → 89420 | Perreuse → Treigny |
| 1973-01-01 | Association merger | 89340 → 89420 | Sainte-Colombe-sur-Loing → Treigny |
| 1943-01-01 | Creation | 89420 | Treigny |