Denville is a large NJ Transit station in Denville. Located on Estling Road, the three-platform station serves both the Morristown Line and the Montclair-Boonton Line, with service to Hoboken or to New York City via Midtown Direct. The Morristown Line station is two low-level platforms located on a curve, with shelters and a mini-high platform while the Montclair-Boonton Line station is a single platform next to the closed Denville Tower. Denville Tower was constructed as an interlocking tower for the junction between the Delaware, Lackawanna and Western Railroad's Boonton Branch and Main Line. The station is the end of a short electrification stretch on the Montclair-Boonton Line and the second-to-last station seeing electrified service on the Morristown Line. After the fork, Morristown Line trains serve Mount Tabor station and Montclair-Boonton Line trains serve the Mountain Lakes station.
Prior to the electrification of the Morristown line in the 1930s, Morristown line trains crossed the Boonton line at a right angle, just east of Denville tower, and continued northwesterly toward Rockaway. From Rockaway, the trains headed southwesterly into Dover. As part of the electrification project, the Morristown line was curved westward and joined the Boonton line in its present location. The track segment between Denville and Rockaway saw limited service after the 1930s, with service on the Rockaway Branch ending in 1948. Interstate 80 now occupies a short portion of the right-of-way. The New Jersey State Historic Preservation Office considered adding the station to their historic building list, however this never went through and the station was demolished in 1992. Denville Tower was given consideration, twice, once in 1978 and again in 1999, but has yet to join the State Register of Historic Places or National Register of Historic Places.