This commune has 2 delegated communes.
| Code | Name |
|---|---|
| 29127 | Loc-Eguiner-Saint-Thégonnec |
| 29266 | Saint-Thégonnec |
| Date | Type | Code | Name |
|---|---|---|---|
| 2016-01-01 | Deletion | 29266 | Saint-Thégonnec |
| 2016-01-01 | Creation of a new commune | 29127 → 29266 | Loc-Eguiner-Saint-Thégonnec → Saint-Thégonnec Loc-Eguiner |
| 2016-01-01 | Creation of a new commune | 29266 | Saint-Thégonnec |
| 2016-01-01 | Creation of a new commune | 29266 | Saint-Thégonnec → Saint-Thégonnec Loc-Eguiner |
| 1943-01-01 | Creation | 29266 | Saint-Thégonnec |