Of 102 counties in the Land of Lincoln, Stephenson County ranks 45th in terms of size (565 square miles). Stephenson County is in Northern Illinois. There is about 1,000 acres of riverfront land for sale in Illinois's Stephenson County based on recent Land Network data. The combined market value of farms and rural land for sale here is about $3 million. Browse all waterfront property for sale in Stephenson 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 Stephenson County is undeveloped land.