The canton Côte d'Argent has 16 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 40184 | Mimizan | 7 673 |
| 40075 | Castets | 2 516 |
| 40150 | Léon | 2 306 |
| 40266 | Saint-Julien-en-Born | 1 781 |
| 40229 | Pontenx-les-Forges | 1 775 |
| 40157 | Lit-et-Mixe | 1 719 |
| 40155 | Linxe | 1 552 |
| 40326 | Vielle-Saint-Girons | 1 518 |
| 40019 | Aureilhan | 1 146 |
| 40278 | Saint-Paul-en-Born | 975 |
| 40182 | Mézos | 868 |
| 40043 | Bias | 809 |
| 40311 | Taller | 693 |
| 40154 | Lévignacq | 362 |
| 40276 | Saint-Michel-Escalus | 332 |
| 40322 | Uza | 180 |