On November 7, 2006, the state constitution of South Carolina was amended to ban same-sex marriage. This amendment has since been ruled unconstitutional by the 4th Circuit US Court of Appeals.
It was explicitly banned there in 1976, although it was not legal before then.
It was explicitly banned there in 1991, although it was not legal before then.
It was explicitly banned there in 1992, although it was not legal before then.
It was explicitly banned there in 1992, although it was not legal before then.
It was explicitly banned there in 1993, although it was not legal before then.
It was explicitly banned there in 1994, although it was not legal before then.
It was explicitly banned there in 1994, although it was not legal before then.
It was explicitly banned there in 1999, although it was not legal before then.
It was explicitly banned there in 2003, although it was not legal before then.
It was explicitly banned there in 2005, although it was not legal before then.
It was explicitly banned there in 2005, although it was not legal before then.
It was explicitly banned there in 2005, although it was not legal before then.