The Alcohol and Tobacco Tax and Trade Bureau (TTB) establishes the 36,467-acre "Yucaipa Valley" American viticultural area (AVA) in San Bernardino County, California. The Yucaipa Valley viticultural area is not located within, nor does it contain, any other established 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.