The value of farms, ranches, and rural real estate for sale in Clay County, Kansas, recently on Land.com was around $5 million. This represents approximately 1,000 acres of farms and ranches for sale in Clay County. Clay County ranks 84th in the Wheat State for the total acreage of land currently advertised for sale. Among cities in Clay County with farms, ranches, and rural real estate for sale, Clay Center had the most land for sale. Clay County is Kansas's 73rd largest county (655 square miles). It's located in the Tallgrass Prairie Kansas region of the state.