La Garde-Adhémar is a commune in the Drôme department in the Auvergne-Rhône-Alpes region in Southeastern France. A member of …La Garde-Adhémar is a commune in the Drôme department in the Auvergne-Rhône-Alpes region in Southeastern France. A member of the association Les Plus Beaux Villages de France, it is located 18.3 km south of Montélimar. In 2021, it had a population of 1,136.