The town of Colombier is located in the Loire department in the Auvergne Rhône-Alpes region.
Colombier is a village of 300 inhabitants located between Annonay and Saint-Étienne, at an altitude of 649 m at the highest point of 1430 m, in the heart of the Regional Park of Pilat.
Its inhabitants are called Croquantes and Croquants.