The state of Indiana has recently been approved by the TTB as a new American Viticultural Area (AVA). They join 206 other viticultural areas across the United States. An AVA specifies a geographical location from which at least 85% of the grapes used to make a wine must have been grown. From Midwest Wine Press:
On February 4th, the Alcohol and Tobacco Tax and Trade Bureau (TTB) issued a press release announcing the establishment of a new viticultural area in Indiana. On February 5, 2013, TTB published a final rule in the Federal Register establishing the 4,800-square mile “Indiana Uplands” American viticultural area in all or portions of 19 counties in south-central Indiana.
Read more via Midwest Wine Press.