Guilherand-Granges is a commune in the Ardèche department in southern France. It is a suburb of Valence, Drôme. It is one of the most populous communes in the Ardéche department, after Annonay and Aub

Ardèche is a department in Auvergne-Rhône-Alpes, Southeastern France. It is named after the river Ardèche and had a population of 334,231 as of 2023. Its prefecture is in Privas, but its largest city