This commune no longer exists in the current COG. Here is its history in the Official Geographic Code.
| Date | Type | Code | Name |
|---|---|---|---|
| 1988-05-01 | Association merger converted to a simple merger | 62136 → 62137 | Blangermont → Blangerval-Blangermont |
| 1972-12-01 | Deletion | 62136 | Blangermont |
| 1972-12-01 | Association merger | 62136 → 62137 | Blangermont → Blangerval-Blangermont |
| 1972-12-01 | Association merger | 62136 | Blangermont |
| 1943-01-01 | Creation | 62136 | Blangermont |