Canton of Valence-1 The canton of Valence-1 is an administrative division of the Drôme department, southeastern France. Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Valence.[1] It consists of the following communes:[1] Bourg-lès-Valence Saint-Marcel-lès-Valence Valence (partly)References ^ a b "Décret n° 2014-191 du 20 février 2014 portant délimitation des cantons dans le département de la Drôme | Legifrance". Retrieved 2017-06-19. Cantons of the Drôme department Bourg-de-Péage Crest Dieulefit Le Diois Drôme des collines Grignan Loriol-sur-Drôme Montélimar-1 Montélimar-2 Nyons et Baronnies Romans-sur-Isère Saint-Vallier Tain-l'Hermitage Le Tricastin Valence-1 Valence-2 Valence-3 Valence-4 Vercors-Monts du Matin 44°56′N 4°56′E / 44.94°N 4.93°E / 44.94; 4.93