Liberty is a city in Pickens County, South Carolina, United States. It is part of the Greenville-Mauldin-Easley metropolitan area. The city was cha…Liberty is a city in Pickens County, South Carolina, United States. It is part of the Greenville-Mauldin-Easley metropolitan area. The city was chartered on March 2, 1876. How exactly Liberty got its name has been a source of debate over the years. There are no real historical accounts of why Liberty was given the name it was. The most popular—though probably mythical—story regarding the reason the area was named Liberty was put forth by Mrs.