The Island is a populated place LOCATED WITHIN the City of Seaford. In turn, the City of Seaford is located within Sussex County.
The Island is located at latitude 38.647 and longitude -75.595.
Since The Island is located within the City of Seaford, all of the census and demographic data for residents of The Island are included as part of the information reported for City of Seaford in the "Profile" tab above.