| VAF26 | Valence Faventines | 30000 | | | | | | |
| ROM26 | Romans-sur-Isère Saint Nicolas | 27000 | | | | | | |
| MTR26 | Montélimar | 21000 | | | | | | |
| VAC26 | Valence Cecile | 19000 | | | | | | |
| PIE26 | Pierrelatte | 8000 | | | | | | |
| POV26 | Portes-lès-Valence | 7000 | | | | | | |
| CRE26 | Crest | 7000 | | | | | | |
| SP326 | Saint-Paul-Trois-Châteaux | 6000 | | | | | | |
| LIV26 | Livron-sur-Drôme | 4700 | | | | | | |
| NYO26 | Nyons | 4700 | | | | | | |
| SVA26 | Saint-Vallier | 4400 | | | | | | |
| PO726 | Pont-de-l'Isère | 3300 | | | | | | |
| SML26 | Saint-Marcel-lès-Valence | 3300 | | | | | | |
| DID26 | Die | 3300 | | | | | | |
| SRA26 | Saint-Rambert-d'Albon | 3100 | | | | | | |
| CHL26 | Chabeuil | 3000 | | | | | | |
| SDO26 | Saint-Donat-sur-l'Herbasse | 2900 | | | | | | |
| SJE26 | Saint-Jean-en-Royans | 2900 | | | | | | |
| LLM26 (LIV26) | Loriol-sur-Drôme | 2700 | | | | | | |
| BEV26 | Beaumont-lès-Valence | 2500 | | | | | | |
| DON26 | Donzère | 2500 | | | | | | |
| CHH26 | Charols | 2400 | | | | | | |
| BLV26 | Bourg-lès-Valence | 2400 | | | | | | |
| ALX26 | Allex | 2300 | | | | | | |
| ETO26 | Étoile-sur-Rhône | 2300 | | | | | | |
| MAD26 | Chabeuil Malissard | 2200 | | | | | | |
| DIE26 | Dieulefit | 2000 | | | | | | |
| SAU26 | Sauzet | 2000 | | | | | | |
| MAC26 | Marches | 2000 | | | | | | |
| MAL26 | Malataverne | 2000 | | | | | | |
| SUZ26 | Saint-Uze | 1800 | | | | | | |
| MO426 | Montélier | 1800 | | | | | | |
| SSO26 | Saint-Sorlin-en-Valloire | 1800 | | | | | | |
| SAC26 | Saulce-sur-Rhône | 1700 | | | | | | |
| BUI26 | Buis-les-Baronnies | 1700 | | | | | | |
| ANY26 | Anneyron | 1700 | | | | | | |
| SLR26 | Suze-la-Rousse | 1700 | | | | | | |
| GRI26 | Grignan | 1700 | | | | | | |
| GRB26 | Granges-les-Beaumont | 1600 | | | | | | |
| JAI26 | Jaillans | 1600 | | | | | | |
| MOI26 | Montoison | 1500 | | | | | | |
| ANE26 | Andancette | 1500 | | | | | | |
| SPA26 | Saint-Paul-lès-Romans | 1500 | | | | | | |
| MTY26 | Montmeyran | 1400 | | | | | | |
| SNA26 | Saint-Nazaire-en-Royans | 1400 | | | | | | |
| CHG26 | Châteauneuf-de-Galaure | 1250 | | | | | | |
| AAN26 | Allan | 1250 | | | | | | |
| GNI26 (MTR26) | Montélimar Gournier | 1250 | | | | | | |
| PE226 | Peyrins | 1200 | | | | | | |
| MUJ26 | Montboucher-sur-Jabron | 1200 | | | | | | |
| CHI26 | Châteauneuf-sur-Isère | 1200 | | | | | | |
| VA326 | Valaurie | 1100 | | | | | | |
| PUS26 | Peyrus | 1100 | | | | | | |
| LBM26 | La Bégude-de-Mazenc | 1100 | | | | | | |
| HAU26 | Hauterives | 1100 | | | | | | |
| MIR26 | Mirabel-aux-Baronnies | 1050 | | | | | | |
| MA626 | Manthes | 1050 | | | | | | |
| TUL26 | Tulette | 1050 | | | | | | |
| LCO26 | La Coucourde | 1000 | | | | | | |
| ERO26 | Érôme | 1000 | | | | | | |
| GNU26 | Génissieux | 1000 | | | | | | |
| TAU26 | Taulignan | 1000 | | | | | | |
| MOL26 | Mollans-sur-Ouvèze | 950 | | | | | | |
| BLA26 | Mirabel-et-Blacons Blacons Et Piegros La Clastre | 900 | | | | | | |
| SAI26 | Saillans | 900 | | | | | | |
| MAG26 | Margès | 850 | | | | | | |
| ALI26 | Alixan | 850 | | | | | | |
| LBR26 | La Bâtie-Rolland | 850 | | | | | | |
| ME426 | Mercurol | 800 | | | | | | |
| MSL26 | Montségur-sur-Lauzon | 800 | | | | | | |
| CZU26 | Albon Croisieux | 750 | | | | | | |
| HRU26 | Rochegude nrazo | 750 | | | | | | |
| VEN26 | Venterol | 750 | | | | | | |
| CHD26 | Châtillon-en-Diois | 750 | | | | | | |
| CHC26 | Chanos-Curson | 700 | | | | | | |
| VNB26 | Vinsobres | 700 | | | | | | |
| CHV26 | La Chapelle-en-Vercors | 650 | | | | | | |
| POE26 | Le Poët-Laval | 650 | | | | | | |
| SM326 | Saint-Michel-sur-Savasse | 650 | | | | | | |
| MAR26 | Marsanne | 650 | | | | | | |
| BOU26 | Bourdeaux | 650 | | | | | | |
| MOG26 | La Motte-de-Galaure | 650 | | | | | | |
| CON26 | Condorcet | 650 | | | | | | |
| AIX26 | Aix-en-Diois Pont De Quart | 600 | | | | | | |
| MOB26 | Montbrison-sur-Lez | 600 | | | | | | |
| VRY26 | Vercheny | 600 | | | | | | |
| BEG26 | Beaufort-sur-Gervanne | 600 | | | | | | |
| SAO26 | Saou | 600 | | | | | | |
| HGB26 | Saint-Gervais-sur-Roubion nrazo | 550 | | | | | | |
| BEM26 | Beaumont-Monteux | 550 | | | | | | |
| MTB26 | Montbrun-les-Bains | 550 | | | | | | |
| LGA26 | La Garde-Adhémar | 550 | | | | | | |
| LUC26 | Luc-en-Diois | 550 | | | | | | |
| GRS26 | Le Grand-Serre | 500 | | | | | | |
| LLU26 | Lus-la-Croix-Haute | 450 | | | | | | |
| BDT26 | La Baume-de-Transit | 450 | | | | | | |
| MOT26 | La Motte-Chalancon | 450 | | | | | | |
| PAR26 | Parnans | 450 | | | | | | |
| C6H26 | Charmes-sur-l'Herbasse Charmes sur herbasse nrazo | 450 | | | | | | |
| JAL26 | Sainte-Jalle St Jalle | 450 | | | | | | |
| HMV26 | Montvendre nrazo | 450 | | | | | | |
| NMB26 | Montélimar Maubec | 400 | | | | | | |
| SED26 | Séderon | 400 | | | | | | |
| HVA26 | Savasse nrazo | 400 | | | | | | |
| MZI26 | Malataverne Z.I. | 350 | | | | | | |
| SAH26 | Sahune | 300 | | | | | | |
| HCP26 | Crépol nrazo | 300 | | | | | | |
| REM26 | Rémuzat | 300 | | | | | | |
| SEL26 | Sainte-Eulalie-en-Royans | 300 | | | | | | |
| SB326 | Saint-Auban-sur-l'Ouvèze | 300 | | | | | | |
| VAS26 | Vassieux-en-Vercors | 250 | | | | | | |
| HPP26 | Chatuzange-le-Goubet Papelissier | 200 | | | | | | |
| HV926 | Saint-Sauveur-Gouvernet nrazo | 200 | | | | | | |
| STN26 | Saint-Agnan-en-Vercors | 200 | | | | | | |
| HCU26 | Curnier nrazo | 200 | | | | | | |
| SCR26 | Sainte-Croix | 150 | | | | | | |
| SJU26 | Saint-Julien-en-Vercors | 150 | | | | | | |
| S4S26 | Salles-sous-Bois | 150 | | | | | | |
| GLA26 | Glandage | 100 | | | | | | |
| HTX26 | Pontaix nrazo | 100 | | | | | | |
| HVO26 | Vercoiran nrazo | 100 | | | | | | |
Taille moyenne des NRA : 2 160 lignes
Taille du NRA médian : 1 000 lignes
261 300 lignes au total