St. Jones Neck is a geographic region of eastern central Kent County, Delaware, United States, with a rich prehistory and colonial history. Originally known just as Jones Neck, it is bounded on the west by the St. Jones River, on the north by Little Creek (roughly, the southeast boundary of Dover Air Force Base), and on the east by Delaware Bay. The area consists of low rolling hills that do not rise very much above sea level, interspersed with bodies of fresh and salt water. Streams are headed by marshes, and there are tidal marshlands along the bay. The neck has pockets of woodland which are concentrated near the freshwater marshes and tributaries. Land use in the neck is at present predominantly agricultural.