Caln Township is a municipality located in Chester County, Pennsylvania. It is part of the Philadelphia metropolitan area and covers an area of approximately 4.5 square miles. The township is primarily residential, featuring a mix of single-family homes, townhouses, and apartments. Established in the early 18th century, Caln Township has a rich history that includes several historic sites. The township is served by the Coatesville Area School District and offers various parks and recreational facilities for residents and visitors to enjoy.