Of 44 counties in the Gem State, Madison County ranks 42nd in terms of size (473 square miles). Madison County is in Eastern Idaho. Recent Land Network data records approximately 1,000 acres of lakefront land and property for sale in Idaho's Madison County, which is valued at a combined $3 million. Browse all waterfront property for sale in Madison 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 Madison County is residential property.