There was a total of around $7 million of ranches, farms, hunting land and other rural land and acreage for sale in Clay County recently on Land.com. The total acreage of all Clay County ranches, farms, hunting land and other rural land and acreage for sale was 2,000 acres. Clay County ranks 46th out of 105 counties in the Jayhawk State for the total acreage of land currently advertised for sale. Of all land for sale in Clay County, Clay Center had the most land for sale. Clay County is the 73rd biggest county (655 square miles) in Kansas. It's located in the Tallgrass Prairie Kansas region of Kansas.