Troy Hills, New Jersey

Troy Hills is a census-designated place (CDP) in the township of Parsippany-Troy Hills, Morris County, in the U.S. state of New Jersey. It is in the southeast part of the township, bordered to the north and west by the Parsippany CDP, to the south by Whippany in Hanover Township, and to the east by Troy Meadows, the largest freshwater marsh in New Jersey.

Interstate 80 forms the northern edge of the CDP, and Jefferson Road is the western edge. Troy Hills is 6 mi northeast of Morristown and 17 mi northwest of Newark.

The community was first listed as a CDP prior to the 2020 census.