The Alcohol and Tobacco Tax and Trade Bureau (TTB) establishes the approximately 526,000-acre "Willcox" viticultural area in portions of Graham and Cochise Counties in southeastern Arizona. The "Willcox" viticultural area is not located within any other viticultural area. TTB designates viticultural areas to allow vintners to better describe the origin of their wines and to allow consumers to better identify wines they may purchase.