Mill Creek is a long 3rd order tributary to Whitethorn Creek in Pittsylvania County, Virginia.
Mill Creek rises about 2 miles south of Whittles, Virginia and then flows generally east to join Whitethorn Creek about 1 mile east of Coles Hill.
Mill Creek drains of area, receives about 45.6 in/year of precipitation, has a wetness index of 426.60, and is about 50% forested.