| Date | Type | Code | Name |
|---|---|---|---|
| 2016-01-01 | Creation of a new commune | 50484 | Saint-Hilaire-du-Harcouët |
| 2016-01-01 | Creation of a new commune | 50484 | Saint-Hilaire-du-Harcouët |
| 2016-01-01 | Creation of a new commune | 50515 → 50484 | Saint-Martin-de-Landelles → Saint-Hilaire-du-Harcouët |
| 2016-01-01 | Creation of a new commune | 50644 → 50484 | Virey → Saint-Hilaire-du-Harcouët |
| 1943-01-01 | Creation | 50484 | Saint-Hilaire-du-Harcouët |