The Alcohol and Tobacco Tax and Trade Bureau (TTB) establishes the approximately 5,850-acre "Mount Pisgah, Polk County, Oregon" viticultural area in Polk County, Oregon. The viticultural area is located entirely within the existing Willamette Valley 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.