The current administrative region of Auvergne is larger than the historical province of Auvergne, and includes provinces and areas that historically were not part of Auvergne. The Auvergne region is composed of the following old provinces:
a small part of Vivarais: extreme southeast of Haute-Loire. Vivarais is essentially inside the Rhône-Alpes region.
a small part of Forez: extreme northeast of Haute-Loire. Forez is essentially inside the Rhône-Alpes region.
Velay, Gévaudan, and Vivarais are often considered to be sub-provinces of the old Languedoc province. Forez is also often considered to be a sub-province of Lyonnais province. Therefore, the modern region of Auvergne is composed of the provinces of Auvergne, major part of Bourbonnais, and parts of Languedoc and Lyonnais.