McPherson County is in Glacial Lakes & Prairies South Dakota. Of the 66 counties in the Mount Rushmore State, 736,982-acre McPherson County ranks 24th by size. The most common type of land for sale by combined acreage in McPherson County is undeveloped land. Browse all waterfront property for sale in McPherson 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!