Morristown, town, seat (1740) of Morris county, north-central New Jersey, U.S., on the Whippany River, 18 miles (29 km) west of Newark. Founded as West Hanover in 1710, when a forge was established to exploit local iron ore, it was renamed in 1740 for Lewis Morris, then governor of the colony. During the American Revolution the area was the winter quarters of the American army in 1779–80, where more than 10,000 troops camped; the site is preserved as Morristown National Historical Park, just southwest of the town. In addition, the American officer and later traitor Benedict Arnold was court-martialed in the town’s Dickerson Tavern (now demolished) in 1779.
Morristown National Historical Park, established in 1933, covers about 2.6 square miles (6.8 square km). It includes Jockey Hollow, site of the troop encampment that now has reconstructions of the soldiers’ huts; Wick House, a restored revolutionary-era farmhouse that served as headquarters for General Arthur St. Clair; the Jacob Ford Mansion, which was General George Washington’s headquarters; and the site of Fort Nonsense, a low earthwork fortification built in 1777. The park’s historical museum has a collection of relics, books, and manuscripts pertaining to Washington and the war.
The inventor Samuel F.B. Morse and his partner Alfred Vail refined Morse’s telegraph equipment at the local Speedwell Ironworks in 1837–38 and also developed an early version of Morse Code there. Also in the late 1830s a railroad line was completed that connected the town to Newark, transforming Morristown into a major transportation hub. When the iron industry declined in mid-century, the town became primarily a residential community. In the late 19th century it was home to such notables as writers Bret Harte and Frank R. Stockton and cartoonist Thomas Nast; lavish estates surrounded the town.
Morristown has remained largely residential but also has chemical, cosmetics, pharmaceutical, and machinery industries and research laboratories. There are several private schools in the area in addition to Seeing Eye Inc., which trains guide dogs for the blind. Inc. 1865. Pop. (2000) 18,544; (2010) 18,411.