The map above shows Iowa and Ontario side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Iowa vs Ontario Geography
Land area
- Iowa has a land area of 55,854 square miles (144,660 km²), while Ontario has 354,342 square miles (917,741 km²).
- Ontario's land area is 6.3 times (534%) larger than Iowa's.
Total area
- Iowa: 56,273 square miles (145,746 km²) vs Ontario: 415,598 square miles (1,076,395 km²), including inland and coastal water.
- Ontario's total area is 7.4 times (639%) larger than Iowa's.
Length
- Iowa is 216 miles (347 km) long from north to south; Ontario is 1,085 miles (1,747 km).
- Ontario's north-south length is 5.0 times (402%) longer than Iowa's.
Width
- Iowa spans 335 miles (539 km) east to west; Ontario spans 1,013 miles (1,630 km).
- Ontario's east-west width is 3.0 times (202%) wider than Iowa's.
Highest point
- Iowa's highest point is Hawkeye Point at 1,669 feet (509 m); Ontario's is Ishpatina Ridge at 2,274 feet (693 m).
- Ishpatina Ridge is 605 feet higher than Hawkeye Point.
Lowest point
- Iowa's lowest point is Mississippi River at 480 feet; Ontario's is Hudson Bay at 0 feet.
- Ontario's lowest point is 480 feet lower.
Iowa vs Ontario Population and History
Population
- Iowa has a population of 3,241,488 (2024), while Ontario has 16,136,480 (2026).
- Ontario's population is 5.0 times (398%) larger than Iowa's.
Population density
- Iowa: 58.0 people per square mile vs Ontario: 45.5.
- Iowa's population density is 1.3 times (27%) higher than Ontario's.
Biggest city
- Iowa's biggest city is Des Moines with 213,096 people; Ontario's is Toronto with 2,794,356.
- Toronto's population is 13.1 times larger than Des Moines'.
Largest metro area
- Iowa's largest metropolitan area is Omaha, NE-IA metro area (1,001,010 people) vs Ontario's Toronto CMA (6,202,225).
- Toronto CMA's population is 6.2 times (520%) larger than Omaha, NE-IA metro area's.
History
- Iowa: Admitted to the Union on December 28, 1846, as the 29th state.
- Ontario: Joined Confederation on July 1, 1867, as one of the four founding provinces.
- In its current form, Iowa is the older of the two by 21 years.
Iowa vs Ontario Economy
GDP
- Iowa's GDP is $265.8 billion (2024) vs Ontario's $873.9 billion.
- Ontario's economic output is 3.3 times (229%) larger than Iowa's.
GDP per capita
- Iowa: $81,998 per person vs Ontario: $54,132.
- Iowa's GDP per capita is 1.5 times (51%) higher than Ontario's.
Official Websites
Iowa official website · Ontario official website
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More Size Comparisons
All Iowa size comparisons · All Ontario size comparisons
Area, elevation and boundary figures come from official national statistics and US Census Bureau and Natural Earth boundary data; US state population, economic, county and tax figures come from the US Census Bureau, the Bureau of Economic Analysis and the Tax Foundation. Figures are rounded and for general reference.