Long Neck is a census-designated place (CDP) in Sussex County, Delaware, United States. The population was 1,980 at the 2010 census. Long Neck is the only census-designated place in Sussex County. It is part of the Salisbury, Maryland-Delaware Metropolitan Statistical Area.GeographyLong Neck is located at .According to the United States Census Bureau, the CDP has a total area of 6.7km2, of which 0.68% is water.DemographicsAs of the census of 2000, there were 1,629 people, 817 households, and 545 families residing in the CDP. The population density was 655.0 people per square mile (252.6/km²). There were 1,807 housing units at an average density of 726.6 per square mile (280.2/km²). The racial makeup of the CDP was 98.28% White, 0.43% African American, 0.25% Native American, 0.06% Asian, 0.37% from other races, and 0.61% from two or more races. Hispanic or Latino of any race were 0.49% of the population.
