Mill Creek begins in southeastern Dennison Township, not far from the community of White Haven.

[1] The elevation near the mouth of Mill Creek is 1,168 feet (356 m) above sea level.

[1] The Ray T. Mantz Dam is in the United States Geological Survey quadrangle of White Haven and is not accessible to the public.

[4] Both the mouth and the source of Mill Creek are in the United States Geological Survey quadrangle of White Haven.

[3] Mill Creek was added to the Geographic Names Information System on August 2, 1979.