The canton Val de Save has 40 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 32410 | Samatan | 2 517 |
| 32213 | Lombez | 2 233 |
| 32433 | Simorre | 688 |
| 32261 | Monblanc | 394 |
| 32297 | Noilhan | 388 |
| 32090 | Castillon-Savès | 332 |
| 32098 | Cazaux-Savès | 326 |
| 32418 | Sauveterre | 278 |
| 32321 | Polastron | 263 |
| 32432 | Seysses-Savès | 244 |
| 32289 | Montpezat | 237 |
| 32206 | Laymont | 232 |
| 32322 | Pompiac | 205 |
| 32171 | Labastide-Savès | 193 |
| 32374 | Saint-Élix-d'Astarac | 187 |
| 32124 | Espaon | 186 |
| 32182 | Lahas | 181 |
| 32451 | Tournan | 175 |
| 32465 | Villefranche-d'Astarac | 169 |
| 32336 | Puylausic | 165 |
| 32353 | Sabaillan | 153 |
| 32407 | Saint-Soulan | 152 |
| 32386 | Saint-Lizier-du-Planté | 148 |
| 32138 | Garravet | 146 |
| 32421 | Savignac-Mona | 146 |
| 32295 | Nizas | 141 |
| 32356 | Saint-André | 124 |
| 32141 | Gaujan | 122 |
| 32051 | Bézéril | 105 |
| 32277 | Montamat | 105 |
| 32309 | Pellefigue | 103 |
| 32308 | Pébées | 96 |
| 32387 | Saint-Loube | 96 |
| 32048 | Betcave-Aguin | 92 |
| 32270 | Mongausy | 91 |
| 32069 | Cadeillan | 85 |
| 32140 | Gaujac | 76 |
| 32284 | Montégut-Savès | 68 |
| 32276 | Montadet | 66 |
| 32420 | Sauvimont | 65 |