[5] The township derives its name from Neshannock Creek, a Native American name purported to mean "double stream".

The township includes the New Castle Northwest census-designated place, as well as the communities of Walmo, Coaltown, Painter Hill, Kings Chapel, and Sunset Valley.

27.0% of all households were made up of individuals, and 17.9% had someone living alone who was 65 years of age or older.

Homes in Neshannock range from city street living on the edge of New Castle to larger country-style houses with several acres.

Also part of Neshannock Township's Pearson Park is Hess Ice Rink and Baseball Field.

The rink is home of the Dallas Stars defenseman, Stephen Johns.

The club has a golf course, tennis courts, putting green, and a driving range.