Manitoba (Canada) is 4.5 times larger than Iowa (USA).
Area: 647,797 km2 StatCan
Population: 1,208,268 (May 2013) StatCan
Manitoba is a Canadian prairie province. The province, with an area of 649,950 square kilometres, has a largely continental climate, with thousands of lakes and many rivers. Wikipedia
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