Clay County is in Tallgrass Prairie Kansas. Of the 105 counties in the Wheat State, Clay County is 73rd in terms of its size (655 square miles). There is 1,000 acres of residential land for sale in Clay County, Kansas, based on recent Land Network data, making it the most common type of land for sale in Clay County. The combined market value of ranches, farms, hunting land and other rural land and acreage for sale here is nearly $2 million. The average price of residential acreage for sale in Clay County was $268,971. Browse all residential land and rural property for sale in Kansas 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.