Kingston is a census-designated place and unincorporated community of South Brunswick Township in Middlesex County, and Franklin Township in Somerset County, in the U.S. state of New Jersey. At the 2010 United States Census, the CDP's population was 1,493, of which 1,222 were in South Brunswick Township and 271 in Franklin Township.
The New Jersey State Planning Commission created the Kingston Village Advisory Committee to address issues related to this distinct area. Both South Brunswick and Franklin appoint members to the committee, which holds an annual meeting to discuss issues pertinent to the Kingston area.
Kingston is located in five historic districts and is part of the Millstone River Valley Scenic Byway. The Delaware and Raritan Canal and Rockingham State Historic Site are a short distance away.