Parsippany-Troy Hills Township, commonly called Parsippany, is a township in Morris County, New Jersey, United States. As of the United States 2000 Census, the township population was 50,649. The name Parsippany comes from the Lenape Native American word parsipanong, which means "the place where the river winds through the valley". Parsippany-Troy Hills is the most populous municipality in Morris County.Parsippany-Troy Hills was incorporated as a township by an act of the New Jersey Legislature on March 12, 1928, from portions of Hanover Township, based on the results of a referendum held on May 9, 1928."The Story of New Jersey's Civil Boundaries: 1606-1968", John P. Snyder, Bureau of Geology and Topography; Trenton, New Jersey; 1969. p. 195.

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