Rocky Hill is a borough in Somerset County, in the U.S. state of New Jersey. Named for the Rocky Hill Ridge, this historic village is nestled within the heart of the Raritan Valley region, located alongside the course of the Millstone River.
Elevation: 108 ft (33 m)
Country: United States
State: New Jersey
County: Somerset
Incorporated: December 18, 1889
ZIP Code: 08553
Area code(s): 609 Exchanges: 252, 279, 430, 921, 924
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