Located in Western Iowa, 768-square-mile Sioux County is one of the ten biggest counties in the Cyclone State. Iowa's Sioux County includes about 1,000 acres of residential land and property for sale based on recent Land Network data. The combined market value of land and rural real estate for sale here was almost $17 million. The average price of residential land for sale in Sioux County was $406,956. 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.