A total of nearly 6,000 acres were listed for sale in Madison County, Alabama, recently; the combined value of all Madison County farms, ranches, and rural real estate for sale was around $432 million. Madison County ranks sixth out of 67 counties in the Camellia State for the combined amount of land currently advertised for sale. Of all land and rural real estate for sale in Madison County, Huntsville had the most land for sale. From an economic perspective, government and state-level services contribute most to Madison County's overall GDP. Madison County is Alabama's 19th biggest county (812 square miles). It's located in the Mountains Alabama region of Alabama.