Layton is an unincorporated community and census-designated place located within Sandyston Township in Sussex County, in the U.S. state of New Jersey. The area is served as United States Postal Service ZIP Code 07851. As of the 2000 United States census, the population for ZIP Code Tabulation Area 07851 was 250.Layton is located 574 feet above sea level. The Dingman's Ferry Bridge, crosses the Delaware River at Layton, connecting County Route 560 in New Jersey to PA 739 in Pennsylvania.