www.LIHorseProperty.com , www.LongIslandSeniorsHousing.com , www.LongIslandGolfProperties.com,   www.LIHomeAuction.com ,  www.LIWaterfrontProperties.com , &  www.PrudentialElliman.com ,  www.prudential.com/realestate .   Nesconset Information Nesconset is a census-designated place (CDP) in Suffolk County , Long Island , New York , United States . The population was 11,992 at the 2000 census. Nesconset, New York, in Suffolk county, is