Marshall County is in Central Iowa. Of the 99 counties in the state, Marshall County is 47th in terms of its size (573 square miles). Recent listings of residential land for sale in Marshall County, Iowa, totals roughly 1,000 acres and a combined market value of almost $15 million. The most common type of land for sale by combined acreage in Marshall County is undeveloped land. The average price of residential land for sale in Marshall County was $255,646. Browse all residential land and rural property for sale in Iowa to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.