Land for sale in Kentucky's Marshall County recently totaled nearly $66 million and 2,000 acres. Marshall County ranks 10th out of 120 counties in the state for the combined amount of land currently advertised for sale. Among cities in Marshall County with farms, ranches, and rural real estate for sale, Benton featured the most land for sale. Manufacturing and related services are the largest economic sectors in Marshall County. Marshall County is Kentucky's 54th biggest county (340 square miles). It's located in the Western Kentucky region of Kentucky.