Located in Western Iowa, 768-square-mile Sioux County is one of the ten biggest counties in the Cyclone State. Recent listings of residential land for sale in Iowa's Sioux County totals about 1,000 acres and a combined market value of roughly $16 million. The most common type of land for sale by combined acreage in Sioux County is house. The average price of residential acreage for sale in Sioux County was $426,464. 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.