Guilherand-Granges (French pronunciation: [ɡijʁɑ̃ ɡʁɑ̃ʒ]; Vivaro-Alpine: Guilharand e las Granjas, before 1991: Guilherand)[3] is a commune in the Ardèche department in southern France.

It is a suburb of Valence, Drôme.

It is one of the most populous commune in the Ardéche department, after Annonay and Aubenas, and before Tournon-sur-Rhône.

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