Ontario (Canada) is 7.4 times larger than Iowa (USA).
Area: 1,076,395 km2 StatCan
Population: 12,851,821 (May 2019) StatCan
Ontario is one of the ten provinces of Canada, located in east-central Canada. It is Canada's most populous province by a large margin, accounting for nearly 40% of all Canadians, and is the second largest province in total area. 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