Marshall County is in Glacial Lakes & Prairies South Dakota. Of the 66 counties in the Mount Rushmore State, Marshall County is 35th in terms of its size (886 square miles). Recent listings of farms for sale in South Dakota's Marshall County totals almost 1,000 acres and a combined market value of almost $8 million. The most common type of land for sale by combined acreage in Marshall County is farms. The average price of farmland for sale in Marshall County was $4 million. The economy here is principally agricultural. Farms for sale in Marshall County feature livestock including cattle, horses, goats and sheep. Browse all South Dakota farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future business or lifestyle needs.