[4] The John H. Nelson House was listed on the National Register of Historic Places in 2000.

A short segment of Fallowfield Township in the northeastern corner runs adjacent with Monessen across the Monongahela River in Westmoreland County, As of the census[6] of 2000, there were 4,461 people, 1,765 households, and 1,313 families living in the township.

There were 1,878 housing units at an average density of 88.2 per square mile (34.1/km2).

There were 1,765 households, out of which 24.9% had children under the age of 18 living with them, 63.6% were married couples living together, 7.8% had a female householder with no husband present, and 25.6% were non-families.

22.3% of all households were made up of individuals, and 12.0% had someone living alone who was 65 years of age or older.