Information from: “Occitan ou Français bourbonnais, les habitants de la région Auvergne parlent une langue régionale” .
40 percent certain, based on the evidence available
(This rough estimate was calculated by taking 12% [self-reported fluent speakers in 2006] of 1,300,000 [approximate population of Auvergne region in 2008].)
SPEAKER NUMBER TRENDS
MORE ON VITALITY
In a 2006 survey, 61% reported understanding their regional language somewhat, and 22% perfectly. 42% reported speaking somewhat, and 12% fluently.
Information from: “Atlas of the World’s Languages in Danger” . Christopher Moseley (ed.) (2010) UNESCO Publishing
"The 2004 Ethnologue figure of 1,315,000 speakers without source reference seems grossly inflated"
The departments of Cantal (except Aurillac region), Haute-Loire, and Puy-de-Dôme, and extending to the Gannat region in Allier, the Saint-Bonnet-le-Château region in Loire, and the western border areas in Ardèche