The canton Lamballe-Armor has 10 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 22093 | Lamballe-Armor | 17 241 |
| 22246 | Pommeret | 2 116 |
| 22044 | Coëtmieux | 1 869 |
| 22098 | Landéhen | 1 444 |
| 22077 | Hénansal | 1 294 |
| 22002 | Andel | 1 180 |
| 22160 | Noyal | 985 |
| 22140 | La Malhoure | 626 |
| 22326 | Saint-Rieul | 551 |
| 22261 | Quintenic | 363 |