Zion is an unincorporated community along the border of Hillsborough Township and Montgomery Township in Somerset County, in the U.S. state of New Jersey.Locality Search, State of New Jersey. Accessed January 21, 2015.History, Montgomery Township, New Jersey. Accessed January 21, 2015. "There are several hamlets within the Township: Belle Mead, Blawenburg, Dutchtown, Harlingen, Rocky Hill, Skillman and Zion." It is located on Rock Brook, approximately north of Hopewell.
The Rock Brook Bridge in Zion is listed on the National Register of Historic Places.
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