Land for sale in Clay County, Alabama, recently totaled approximately $16 million and 3,000 acres. Clay County ranks 57th out of 67 counties in the Cotton State for the total number of acres of land currently advertised for sale. Of all locations in Clay County with farms, ranches, and rural real estate for sale, Ashland featured the most land for sale. Manufacturing and related services are the largest economic sectors in Clay County. Clay County is Alabama's 55th biggest county (606 square miles). It's located in the Metropolitan Alabama region of the state.