This commune no longer exists in the current COG. Here is its history in the Official Geographic Code.
| Date | Type | Code | Name |
|---|---|---|---|
| 2014-07-01 | Association merger converted to a simple merger | 53166 → 53127 | Niort-la-Fontaine → Lassay-les-Châteaux |
| 1974-10-01 | Deletion | 53166 | Niort-la-Fontaine |
| 1974-10-01 | Association merger | 53166 | Niort-la-Fontaine |
| 1974-10-01 | Association merger | 53166 → 53127 | Niort-la-Fontaine → Lassay-les-Châteaux |
| 1943-01-01 | Creation | 53166 | Niort-la-Fontaine |