Princeton North, also known as North Princeton, is an unincorporated community that is located in Princeton, in Mercer County, New Jersey, United States. As of the 2000 Census, the CDP population was 4,528. While the area was categorized as a census-designated place in the 2000 Census, the CDP status was eliminated by the United States Census Bureau as of the 2010 Census. The community is located in what was formerly Princeton Township.