| 2021-01-01 | Deletion of a delegated commune | 81062 | Castelnau-de-Brassac → Fontrieu |
| 2021-01-01 | Deletion of a delegated commune | 81091 → 81062 | Ferrières → Fontrieu |
| 2021-01-01 | Deletion of a delegated commune | 81153 → 81062 | Le Margnès → Fontrieu |
| 2016-01-01 | Deletion | 81062 | Castelnau-de-Brassac |
| 2016-01-01 | Creation of a new commune | 81062 | Castelnau-de-Brassac |
| 2016-01-01 | Creation of a new commune | 81062 | Castelnau-de-Brassac → Fontrieu |
| 2016-01-01 | Creation of a new commune | 81091 → 81062 | Ferrières → Fontrieu |
| 2016-01-01 | Creation of a new commune | 81153 → 81062 | Le Margnès → Fontrieu |
| 1943-01-01 | Creation | 81062 | Castelnau-de-Brassac |