Valley Township was formed in 1852 by decree of court from parts of the townships of West Caln, West Brandywine, East Caln, and Sadsbury, the larger part of its territory being taken from the last 2 townships with the Village of Coatesville in about the center of it. It was reduced in size first by the incorporation of the borough of Coatesville in 1867, and next by the erection of the new township of Caln in 1868, which later included all of Valley Township east of Coatesville. The township is now only about one half of its original size.

This page was updated on March 1, 2009