The canton Saint-Germain-du-Puy has 18 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 18213 | Saint-Germain-du-Puy | 4 779 |
| 18003 | Les Aix-d'Angillon | 1 877 |
| 18109 | Henrichemont | 1 721 |
| 18235 | Sainte-Solange | 1 111 |
| 18194 | Rians | 950 |
| 18035 | Brécy | 927 |
| 18226 | Saint-Michel-de-Volangis | 474 |
| 18253 | Soulangis | 454 |
| 18019 | Azy | 450 |
| 18156 | Morogues | 424 |
| 18176 | Parassy | 415 |
| 18016 | Aubinges | 401 |
| 18151 | Montigny | 316 |
| 18163 | Neuvy-Deux-Clochers | 247 |
| 18162 | Neuilly-en-Sancerre | 244 |
| 18111 | Humbligny | 175 |
| 18051 | La Chapelotte | 132 |
| 18202 | Saint-Céols | 16 |