Antarctica is 125 times larger than Louisiana (USA).
Area: 14,000,000 km2 World Factbook
Population: 4,490 (Summer 2009) World Factbook
Antarctica is Earth's southernmost continent, containing the geographic South Pole. It is situated in the Antarctic region of the Southern Hemisphere, almost entirely south of the Antarctic Circle, and is surrounded by the Southern Ocean. Wikipedia
Louisiana is a state located in the southern region of the United States. Louisiana is the 31st most extensive and the 25th most populous of the 50 United States. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. Wikipedia