Granted AOC status in 1906, the Armagnac region lies between the Adour and Garonne rivers in the foothills of the Pyrenees. The region contains 15,000 hectares (37,000 acres) of grape-producing vines.

 The Fallières Decree of 1909 describes the three districts:

• Bas-Armagnac
• Armagnac-Ténarèze
• Haut-Armagnac