Blair Mound is a historic archaeological site located near Winnsboro, Fairfield County, South Carolina. Blair Mound is an earthen mound structure in the form of a low, oval hummock. It measures approximately and is just over high, with evidence of leveling for agricultural development.
The mound was constructed on the site of a late Woodland trash midden. It represents a late phase of the widespread Mississippian culture Pattern, and appears to have been constructed by A.D. 1300âÂÂ1400.
It was added to the National Register of Historic Places in 1974.