PUY DE DOME, a department in the south of France, forming part of the ancient province of Auvergne. The soil is mountainous, but fertile in all kinds of grain, vines, and fruits; and contains mines of iron, lead, coal, and many mineral springs. There are manufactures of cloth of various kinds, lace, serges, ribbons, &c. The territorial extent of this department is 794,370 hectares, and the population in 1817 was 548,834. The contributions for 1802 amounted to 3,656,547 francs. Clermont is the chief town.