The canton Decize has 9 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 58095 | Decize | 4 932 |
| 58250 | Saint-Léger-des-Vignes | 1 646 |
| 58146 | Lucenay-lès-Aix | 936 |
| 58055 | Champvert | 741 |
| 58087 | Cossaye | 652 |
| 58096 | Devay | 460 |
| 58241 | Saint-Germain-Chassenay | 306 |
| 58306 | Verneuil | 274 |
| 58137 | Lamenay-sur-Loire | 64 |