| ||For other characters named Jill, see Jill.|
Following the destruction in the wake of the Great War, many of Clarksburg's residents left for Morgantown. Those that remained became sick from the chemicals in the Toxic Valley's water. Eventually, the town's population was driven down to just three: Jill, Ande and Cooper Lu. Jill and Ande were soon killed by a yao guai.
Jill is mentioned only in Fallout 76.