Located in Eastern Iowa, 792-square-mile Clayton County is one of the ten biggest counties in the state. A recent survey of Land Network data totals 1,000 acres of residential land for sale in Iowa's Clayton County, which is valued at a combined $4 million. The average price of residential acreage for sale in Clayton County was $271,446. 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.