Denville Township is a township located in Morris County in the northern portion of New Jersey. It serves as a commuter town for New York City, situated approximately 35 miles (56 km) west of Manhattan.
As of the 2020 United States census, the township had a population of 17,107, marking its highest decennial count. This figure represents an increase from the 2010 census count of 16,635 and the 2000 census count of 15,824.