Union

Union, county, northern South Carolina, U.S. It is bordered by the Pacolet River to the north, the Broad River to the east, and the Enoree River to the south. The southern half of it is within Sumter National Forest, including Rose Hill Plantation State Park, home of William H. Gist, the state’s secession governor. The county lies in a hilly piedmont region that is mostly covered in forests of upland hardwoods and pine. Union county...