Denville is a township in Morris County, New Jersey, United States. As of the United States 2000 Census, the township population was 15,824. Denville is known as the "Hub of Morris County" for its location along major transportation routes at the center of the county. In 1988, as part of the town's 75th anniversary celebration, a time capsule was buried that contained "artifacts" from that era. Denville was formed as a township by an Act of the New Jersey Legislature on April 14, 1913, from portions of Rockaway Township.