Of 21 counties in the state, Cumberland County ranks third in terms of size (677 square miles). Cumberland County is in South New Jersey. Recent Land Network data records around 1,000 acres of lakefront homes and property for sale in New Jersey's Cumberland County, which is valued at a combined $3 million. Browse all waterfront property for sale in Cumberland 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 Cumberland County is house.