Located in Eastern Iowa, 792-square-mile Clayton County is one of the ten biggest counties in the Hawkeye State. Iowa's Clayton County includes approximately 1,000 acres of residential land for sale based on recent Land Network data. The combined market value of farms and ranches for sale here was approximately $6 million. The average price of residential land for sale in Clayton County was $346,964. 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.