Campbellsville is in and the county seat of Taylor County, Kentucky, United States. The population within city limits was 10,604 at the 2010 U.S. census. It is the site of Campbellsville University, a private institution. On the border is Green River Lake, established for flood control and now the center of a popular park.Campbellsville is twinned with Buncrana in County Donegal, Republic of Ireland.HistoryThe city was founded in 1817 and laid out by Andrew Campbell, who had moved there from Augusta County, Virginia. Campbell owned a gristmill and a tavern and began selling lots in Campbellsville in 1814. Campbellsville was designated by the state legislature as the county seat in 1848 after Taylor County was separated from Green County. The city agreed to sell the public square to the county for one dollar so that a courthouse could be built here.The first courthouse was burned by Confederate cavalry in 1864 because the Union Army was using it for barracks. After the war, a replacement courthouse was built on the same site. A third courthouse in a modern design was built in 1965 on a property adjoining the "old courthouse". A portion of the old courthouse still stands near the current (3rd) courthouse.