Of 100 counties in the state, Duplin County ranks 13th in terms of size (820 square miles). Duplin County is in Coast North Carolina. The total value of nearly 2,000 acres of riverfront land recently listed for sale in Duplin County, North Carolina, was almost $2 million. Browse all waterfront property for sale in Duplin County on the Land Network to find the marina, lakefront and other recreational property that meets your needs, from waterside land perfect as a retirement investment to existing residential waterfront land and property for hunting, fishing and other outdoor-recreation pursuits! The most common type of land for sale by combined acreage in Duplin County is residential property.