The canton Oloron-Sainte-Marie-1 has 33 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 64422 | Oloron-Sainte-Marie | 10 684 |
| 64126 | Bidos | 1 102 |
| 64007 | Agnos | 1 044 |
| 64040 | Arette | 1 032 |
| 64252 | Gurmençon | 867 |
| 64409 | Moumour | 814 |
| 64029 | Aramits | 659 |
| 64224 | Eysus | 625 |
| 64225 | Ance Féas | 624 |
| 64104 | Bedous | 568 |
| 64217 | Esquiule | 522 |
| 64064 | Asasp-Arros | 516 |
| 64241 | Géronce | 492 |
| 64310 | Lanne-en-Barétous | 481 |
| 64006 | Accous | 471 |
| 64433 | Osse-en-Aspe | 330 |
| 64458 | Préchacq-Josbaig | 299 |
| 64426 | Orin | 269 |
| 64244 | Geüs-d'Oloron | 261 |
| 64276 | Issor | 256 |
| 64039 | Aren | 246 |
| 64330 | Lées-Athas | 229 |
| 64481 | Saint-Goin | 219 |
| 64360 | Lurbe-Saint-Christau | 207 |
| 64336 | Lescun | 163 |
| 64506 | Sarrance | 152 |
| 64351 | Lourdios-Ichère | 145 |
| 64206 | Escot | 118 |
| 64136 | Borce | 112 |
| 64085 | Aydius | 102 |
| 64223 | Etsaut | 74 |
| 64542 | Urdos | 71 |
| 64185 | Cette-Eygun | 66 |