The map above shows Arizona and Ontario side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Arizona vs Ontario Geography
Land area
- Arizona has a land area of 113,655 square miles (294,366 km²), while Ontario has 354,342 square miles (917,741 km²).
- Ontario's land area is 3.1 times (212%) larger than Arizona's.
Total area
- Arizona: 113,985 square miles (295,220 km²) vs Ontario: 415,598 square miles (1,076,395 km²), including inland and coastal water.
- Ontario's total area is 3.6 times (265%) larger than Arizona's.
Length
- Arizona is 429 miles (690 km) long from north to south; Ontario is 1,085 miles (1,747 km).
- Ontario's north-south length is 2.5 times (153%) longer than Arizona's.
Width
- Arizona spans 452 miles (727 km) east to west; Ontario spans 1,013 miles (1,630 km).
- Ontario's east-west width is 2.2 times (124%) wider than Arizona's.
Highest point
- Arizona's highest point is Humphreys Peak at 12,620 feet (3,847 m); Ontario's is Ishpatina Ridge at 2,274 feet (693 m).
- Humphreys Peak is 10,346 feet higher than Ishpatina Ridge.
Lowest point
- Arizona's lowest point is Colorado River at 71 feet; Ontario's is Hudson Bay at 0 feet.
- Ontario's lowest point is 71 feet lower.
Arizona vs Ontario Population and History
Population
- Arizona has a population of 7,582,384 (2024), while Ontario has 16,136,480 (2026).
- Ontario's population is 2.1 times (113%) larger than Arizona's.
Population density
- Arizona: 66.7 people per square mile vs Ontario: 45.5.
- Arizona's population density is 1.5 times (47%) higher than Ontario's.
Biggest city
- Arizona's biggest city is Phoenix with 1,673,164 people; Ontario's is Toronto with 2,794,356.
- Toronto's population is 1.7 times (67%) larger than Phoenix's.
Largest metro area
- Arizona's largest metropolitan area is Phoenix-Mesa-Chandler, AZ metro area (5,186,958 people) vs Ontario's Toronto CMA (6,202,225).
- Toronto CMA's population is 1.2 times (20%) larger than Phoenix-Mesa-Chandler, AZ metro area's.
History
- Arizona: Admitted to the Union on February 14, 1912, as the 48th 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 45 years.
Arizona vs Ontario Economy
GDP
- Arizona's GDP is $570.1 billion (2024) vs Ontario's $873.9 billion.
- Ontario's economic output is 1.5 times (53%) larger than Arizona's.
GDP per capita
- Arizona: $75,186 per person vs Ontario: $54,132.
- Arizona's GDP per capita is 1.4 times (39%) higher than Ontario's.
Official Websites
Arizona official website · Ontario official website
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More Size Comparisons
All Arizona 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.