It lies to the south and east of Bas-Armagnac and Armagnac-Ténarèze, the two other areas, and is much the largest of the three.
The area is called "white Armagnac" because of the abundance of limestone.
Viticulture was developed here in the 19th century to meet the high market demand.
Today the original vineyards still exist but only represent a small amount of the production.
Haut-Armagnac includes the towns of Marciac and Lectoure and the capital of Gers, the city of Auch.