Hillsdale is an unincorporated community located within Colts Neck and Marlboro townships in Monmouth County, New Jersey, United States.[2] The community is located at the intersection of County Route 520 which runs east and west, Conover Road which heads north, and Boundary Road which heads south. The southeastern quadrant of this intersection is a part of Colts Neck while the other three are in Marlboro. The community is located atop a small hill and is largely rural. The Colts Neck quadrant is made up of a housing development while the Marlboro side is mostly forests, parkland, and the remains of the Marlboro Psychiatric Hospital.[3]

Hillsdale, Monmouth County, New Jersey
Unincorporated community
Looking west along CR 520 approaching Conover Road / Boundary Road
Hillsdale, Monmouth County, New Jersey Location of Hillsdale in Monmouth County Inset: Location of county within the state of New Jersey Show map of Monmouth County, New Jersey Hillsdale, Monmouth County, New Jersey Hillsdale, Monmouth County, New Jersey (New Jersey) Show map of New Jersey Hillsdale, Monmouth County, New Jersey Hillsdale, Monmouth County, New Jersey (the United States) Show map of the United States
Coordinates: 40°20′21″N 74°13′31″W
Country	United States
State	New Jersey
County	Monmouth
Township	Colts Neck, Marlboro
Elevation [1]	233 ft (71 m)
GNIS feature ID	877121[1]

References

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