Wisconsin (USA) is 6.3% larger than Greece.
Area: 131,957 km2 World Factbook
Population: 10,775,557 (July 2014) World Factbook
Greece, officially the Hellenic Republic and known since ancient times as Hellas, is a country in Southern Europe. According to the 2011 census, Greece's population is around 11 million. Athens is the nation's capital and largest city. Wikipedia
Wisconsin is a U.S. state located in the north-central United States, in the Midwest and Great Lakes regions. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wikipedia