| Postal Code | Place Name | Region | Department | Arrondissement | Canton |
|---|---|---|---|---|---|
| 26000 | Valence | Auvergne-Rhône-Alpes | Drôme | Valence | Valence |
| 26100 | Romans-sur-Isère | Auvergne-Rhône-Alpes | Drôme | Valence | Romans-sur-Isère |
| 26110 | Nyons | Auvergne-Rhône-Alpes | Drôme | Nyons | Nyons et Baronnies |
| 26120 | Chabeuil | Auvergne-Rhône-Alpes | Drôme | Valence | Crest |
| 26130 | Saint-Paul-Trois-Châteaux | Auvergne-Rhône-Alpes | Drôme | Nyons | Le Tricastin |
| 26140 | Saint-Rambert-d'Albon | Auvergne-Rhône-Alpes | Drôme | Valence | Saint-Vallier |
| 26150 | Die | Auvergne-Rhône-Alpes | Drôme | Die | Le Diois |
| 26160 | La Bégude-de-Mazenc | Auvergne-Rhône-Alpes | Drôme | Nyons | Dieulefit |
| 26170 | Buis-les-Baronnies | Auvergne-Rhône-Alpes | Drôme | Nyons | Nyons et Baronnies |
| 26200 | Montélimar | Auvergne-Rhône-Alpes | Drôme | Nyons | Montélimar |
| 26210 | Épinouze | Auvergne-Rhône-Alpes | Drôme | Valence | Drôme des collines |
| 26220 | Dieulefit | Auvergne-Rhône-Alpes | Drôme | Nyons | Dieulefit |
| 26230 | Grignan | Auvergne-Rhône-Alpes | Drôme | Nyons | Grignan |
| 26240 | Saint-Vallier | Auvergne-Rhône-Alpes | Drôme | Valence | Saint-Vallier |
| 26250 | Livron-sur-Drôme | Auvergne-Rhône-Alpes | Drôme | Valence | Loriol-sur-Drôme |
| 26260 | Saint-Donat-sur-l'Herbasse | Auvergne-Rhône-Alpes | Drôme | Valence | Drôme des collines |
| 26270 | Loriol-sur-Drôme | Auvergne-Rhône-Alpes | Drôme | Valence | Loriol-sur-Drôme |
| 26290 | Donzère | Auvergne-Rhône-Alpes | Drôme | Nyons | Grignan |
| 26310 | Luc-en-Diois | Auvergne-Rhône-Alpes | Drôme | Die | Le Diois |
| 26320 | Saint-Marcel-lès-Valence | Auvergne-Rhône-Alpes | Drôme | Valence | Valence-1 |
| 26330 | Châteauneuf-de-Galaure | Auvergne-Rhône-Alpes | Drôme | Valence | Drôme des collines |
| 26340 | Saillans | Auvergne-Rhône-Alpes | Drôme | Die | Le Diois |
| 26350 | Montrigaud | Auvergne-Rhône-Alpes | Drôme | Valence | Drôme des collines |
| 26380 | Peyrins | Auvergne-Rhône-Alpes | Drôme | Valence | Romans-sur-Isère |
| 26390 | Hauterives | Auvergne-Rhône-Alpes | Drôme | Valence | Drôme des collines |
| 26400 | Crest | Auvergne-Rhône-Alpes | Drôme | Die | Crest |
| 26410 | Menglon | Auvergne-Rhône-Alpes | Drôme | Die | Le Diois |
| 26450 | Cléon-d'Andran | Auvergne-Rhône-Alpes | Drôme | Nyons | Dieulefit |
| 26460 | Bourdeaux | Auvergne-Rhône-Alpes | Drôme | Die | Dieulefit |
| 26470 | La Motte-Chalancon | Auvergne-Rhône-Alpes | Drôme | Die | Le Diois |
| 26500 | Bourg-lès-Valence | Auvergne-Rhône-Alpes | Drôme | Valence | Valence-1 |
| 26510 | Verclause | Auvergne-Rhône-Alpes | Drôme | Nyons | Nyons et Baronnies |
| 26530 | Le Grand-Serre | Auvergne-Rhône-Alpes | Drôme | Valence | Drôme des collines |
| 26540 | Mours-Saint-Eusèbe | Auvergne-Rhône-Alpes | Drôme | Valence | Romans-sur-Isère |
| 26560 | Séderon | Auvergne-Rhône-Alpes | Drôme | Nyons | Nyons et Baronnies |
| 26570 | Montbrun-les-Bains | Auvergne-Rhône-Alpes | Drôme | Nyons | Nyons et Baronnies |
| 26620 | Lus-la-Croix-Haute | Auvergne-Rhône-Alpes | Drôme | Die | Le Diois |
| 26700 | Pierrelatte | Auvergne-Rhône-Alpes | Drôme | Nyons | Le Tricastin |
| 26730 | Eymeux | Auvergne-Rhône-Alpes | Drôme | Valence | Vercors-Monts du Matin |
| 26740 | Sauzet | Auvergne-Rhône-Alpes | Drôme | Nyons | Dieulefit |
| 26750 | Saint-Paul-lès-Romans | Auvergne-Rhône-Alpes | Drôme | Valence | Romans-sur-Isère |
| 26760 | Beaumont-lès-Valence | Auvergne-Rhône-Alpes | Drôme | Valence | Valence-3 |
| 26770 | Taulignan | Auvergne-Rhône-Alpes | Drôme | Nyons | Dieulefit |
| 26780 | Châteauneuf-du-Rhône | Auvergne-Rhône-Alpes | Drôme | Nyons | Montélimar-2 |
| 26790 | Suze-la-Rousse | Auvergne-Rhône-Alpes | Drôme | Nyons | Le Tricastin |