Boyle County is a county located in the central part of Kentucky. As of the 2020 census, the population was 30,614. Its county seat is Danville. The county was formed in 1842 and named for John Boyle (1774–1835), a U.S. Representative, chief justice of the Kentucky Court of Appeals, and later federal judge for the District of Kentucky, and is part of the Danville, KY Micropolitan Statistical Area.

Danville is a home rule-class city in Boyle County, Kentucky, United States. It is the seat of its county. The population was 17,236 at the 2020 Census. Danville is the principal city of the Danville Micropolitan Statistical Area, which includes all of the Boyle and Lincoln counties. In 2001, Danville received a Great American Main Street Award from the National Trust for Historic Preservation. In 2011, Money magazine placed Danville as the fourth-best place to retire in the United States. Centre College in Danville was selected to host U.S. vice-presidential debates in 2000 and 2012.