Hanson County is in Southeast South Dakota. Of the 66 counties in the Mount Rushmore State, Hanson County is 64th in terms of its size (435 square miles). Browse all waterfront property for sale in Hanson 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! By overall acreage, hunting land is the most common type of land for sale in Hanson County.