The canton Ceor-Ségala has 18 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 12056 | Baraqueville | 3 173 |
| 12169 | Naucelle | 2 012 |
| 12162 | Moyrazès | 1 095 |
| 12194 | Quins | 908 |
| 12068 | Colombiès | 884 |
| 12137 | Manhac | 877 |
| 12262 | Sauveterre-de-Rouergue | 709 |
| 12032 | Boussac | 611 |
| 12046 | Camjac | 576 |
| 12113 | Gramond | 551 |
| 12059 | Castanet | 533 |
| 12065 | Centrès | 462 |
| 12045 | Camboulazet | 412 |
| 12276 | Tauriac-de-Naucelle | 398 |
| 12189 | Pradinas | 369 |
| 12041 | Cabanès | 284 |
| 12235 | Saint-Just-sur-Viaur | 216 |
| 12144 | Meljac | 141 |