Of 67 counties in the state, Nassau County is 42nd in terms of its size (725 square miles). Nassau County is in Northeast Florida. Recent listings of riverfront homes and property for sale in Nassau County, Florida, totals nearly 1,000 acres and a combined market value of almost $4 million. The most common type of land for sale by combined acreage in Nassau County is residential property. Browse all waterfront property for sale in Nassau 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 Nassau County is residential property.