Lincoln county is in the Southern Knobs region of Kentucky. The elevation in the county ranges from 760 to 1440 feet above sea level.
It was formed in 1780. Lincoln county was a source of Madison (1786), Mercer (1786), Logan (1792), Green (1793), Garrard (1797), Pulaski (1799), Knox (1800), Casey (1807), Rockcastle (1810), and Boyle (1842) counties. The county seat is Stanford.
In 2010 the county population was 24,742 in a land area of 334.10 square miles, an average of 74.1 people per square mile.
The equine population was 3,000 in the 2012 Kentucky Equine Survey.
Lincoln was one of the original counties in the Kentucky territory of Virginia. It was named for General Benjamin Lincoln, a Virginia soldier who was a British prisoner at the time the county was formed.