Harrodsburg is a home rule-class city in Mercer County, Kentucky, United States. It is the seat of its county. The population was 9,064 at the 2020 census.

Mercer County is a county located in the central part of the U.S. Commonwealth of Kentucky. As of the 2020 census, the population was 23,772. Its county seat is Harrodsburg. The county was formed from Lincoln County, Virginia in 1785 and is named for Revolutionary War General Hugh Mercer, who was killed at the Battle of Princeton in 1777. It was formerly a prohibition or dry county.