Campbellsville is a city in central Kentucky, United States, founded in 1817 by Andrew Campbell. As of the 2020 United States Census, the population was 11,426. It is known for Campbellsville University, Taylor Regional Hospital health care system, its historic downtown, and the proximity to Green River Lake State Park. Campbellsville is the county seat of Taylor County which has a geographic boundary shaped like a heart. Campbellsville celebrated its bicentennial on July 4, 2017.