When a US winery wants to tell you the geographic pedigree of its wine, it uses a tag on its label called an Appellation of Origin. Appellations are defined either by political boundaries, such as the name of a county or state, or by federally-recognized growing regions called American Viticultural Areas (AVAs), listed below:
AVA Database
US Viticultural Areas by nameUS Viticultural Areas by size
US Viticultural Areas by state
US Viticultural Areas by effective date
California Viticultural Areas by name
California Viticultural Areas by size
California Viticultural Areas by county
California Viticultural Areas by effective date
FILES Section
