Iowa (USA) is 25% larger than Pennsylvania (USA).
Area: 144,669 km2 US Census
Population: 3,090,416 (July 2013) US Census
Iowa is a U.S. state in the Midwestern United States, a region sometimes called the "American Heartland". Wikipedia
Area: 115,883 km2 US Census
Population: 12,773,801 (July 2013) US Census
Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States, and the Great Lakes region. Wikipedia