Estill County is a county located in the U.S. state of Kentucky. As of the 2020 census, the population was 14,163. Its county seat is Irvine. The county was formed in 1808 and named for Captain James Estill, a Kentucky militia officer who was killed in the Battle of Little Mountain during the American Revolutionary War. Estill County is a moist county meaning that the county seat, the city of Irvine, allows the sale of alcohol after the October 9, 2013, vote, but not the rest of Estill County outside the Irvine city limits. Estill County has two adjacent towns, known as the twin cities, Irvine and Ravenna. Both cities sit along the Kentucky River in the central part of the county. Ravenna is home to a former CSX Transportation facility, now owned by Kentucky Steam Heritage Corporation for the restoration of Chesapeake and Ohio 2716. It conducts the Ravenna Railroad Festival annually in late summer, and the historic Fitchburg & Cottage Furnaces are located here. Irvine hosts the annual Mountain Mushroom Festival over the last weekend of April, which celebrates the abundant Morel Mushrooms found in the region.

Clark County is a county located in the U.S. state of Kentucky. As of the 2020 census, the population was 36,972. Its county seat is Winchester. The county was created in 1792 from Bourbon and Fayette counties and is named for Revolutionary War hero George Rogers Clark. Clark County is part of the Lexington-Fayette, KY Metropolitan Statistical Area.