The altitude of the commune of Saint-Dier-d'Auvergne ranges between 416 and 700 meters. The area of the commune is 20.15 km2.[4] The nearest larger towns are Courpière (10 km to the northeast) and Billom (12 km to the northwest).[5]
Population and housing
In 2019, Saint-Dier-d'Auvergne had a population of 542.[6] As of 2019, there are 416 dwellings in the commune, of which 265 primary residences.[7]