The map above shows Colorado and Ontario side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Colorado vs Ontario Geography
Land area
- Colorado has a land area of 103,637 square miles (268,419 km²), while Ontario has 354,342 square miles (917,741 km²).
- Ontario's land area is 3.4 times (242%) larger than Colorado's.
Total area
- Colorado: 104,095 square miles (269,605 km²) vs Ontario: 415,598 square miles (1,076,395 km²), including inland and coastal water.
- Ontario's total area is 4.0 times (299%) larger than Colorado's.
Length
- Colorado is 467 miles (751 km) long from north to south; Ontario is 1,085 miles (1,747 km).
- Ontario's north-south length is 2.3 times (132%) longer than Colorado's.
Width
- Colorado spans 387 miles (622 km) east to west; Ontario spans 1,013 miles (1,630 km).
- Ontario's east-west width is 2.6 times (162%) wider than Colorado's.
Highest point
- Colorado's highest point is Mount Elbert at 14,422 feet (4,396 m); Ontario's is Ishpatina Ridge at 2,274 feet (693 m).
- Mount Elbert is 12,148 feet higher than Ishpatina Ridge.
Lowest point
- Colorado's lowest point is Arikaree River at 3,326 feet; Ontario's is Hudson Bay at 0 feet.
- Ontario's lowest point is 3,326 feet lower.
Colorado vs Ontario Population and History
Population
- Colorado has a population of 5,957,493 (2024), while Ontario has 16,136,480 (2026).
- Ontario's population is 2.7 times (171%) larger than Colorado's.
Population density
- Colorado: 57.5 people per square mile vs Ontario: 45.5.
- Colorado's population density is 1.3 times (26%) higher than Ontario's.
Biggest city
- Colorado's biggest city is Denver with 729,019 people; Ontario's is Toronto with 2,794,356.
- Toronto's population is 3.8 times (283%) larger than Denver's.
Largest metro area
- Colorado's largest metropolitan area is Denver-Aurora-Centennial, CO metro area (3,052,498 people) vs Ontario's Toronto CMA (6,202,225).
- Toronto CMA's population is 2.0 times (103%) larger than Denver-Aurora-Centennial, CO metro area's.
History
- Colorado: Admitted to the Union on August 1, 1876, as the 38th state.
- Ontario: Joined Confederation on July 1, 1867, as one of the four founding provinces.
- In its current form, Ontario is the older of the two by 9 years.
Colorado vs Ontario Economy
GDP
- Colorado's GDP is $557.6 billion (2024) vs Ontario's $873.9 billion.
- Ontario's economic output is 1.6 times (57%) larger than Colorado's.
GDP per capita
- Colorado: $93,602 per person vs Ontario: $54,132.
- Colorado's GDP per capita is 1.7 times (73%) higher than Ontario's.
Official Websites
Colorado official website · Ontario official website
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More Size Comparisons
All Colorado 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.