The map above shows Arkansas and Ontario side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Arkansas vs Ontario Geography
Land area
- Arkansas has a land area of 51,992 square miles (134,658 km²), while Ontario has 354,342 square miles (917,741 km²).
- Ontario's land area is 6.8 times (582%) larger than Arkansas'.
Total area
- Arkansas: 53,198 square miles (137,781 km²) vs Ontario: 415,598 square miles (1,076,395 km²), including inland and coastal water.
- Ontario's total area is 7.8 times (681%) larger than Arkansas'.
Length
- Arkansas is 243 miles (392 km) long from north to south; Ontario is 1,085 miles (1,747 km).
- Ontario's north-south length is 4.5 times (347%) longer than Arkansas'.
Width
- Arkansas spans 279 miles (449 km) east to west; Ontario spans 1,013 miles (1,630 km).
- Ontario's east-west width is 3.6 times (263%) wider than Arkansas'.
Highest point
- Arkansas's highest point is Mount Magazine at 2,752 feet (839 m); Ontario's is Ishpatina Ridge at 2,274 feet (693 m).
- Mount Magazine is 478 feet higher than Ishpatina Ridge.
Lowest point
- Arkansas's lowest point is Ouachita River at 55 feet; Ontario's is Hudson Bay at 0 feet.
- Ontario's lowest point is 55 feet lower.
Arkansas vs Ontario Population and History
Population
- Arkansas has a population of 3,088,354 (2024), while Ontario has 16,136,480 (2026).
- Ontario's population is 5.2 times (422%) larger than Arkansas'.
Population density
- Arkansas: 59.4 people per square mile vs Ontario: 45.5.
- Arkansas' population density is 1.3 times (31%) higher than Ontario's.
Biggest city
- Arkansas's biggest city is Little Rock with 204,774 people; Ontario's is Toronto with 2,794,356.
- Toronto's population is 13.6 times larger than Little Rock's.
Largest metro area
- Arkansas's largest metropolitan area is Memphis, TN-MS-AR metro area (1,339,345 people) vs Ontario's Toronto CMA (6,202,225).
- Toronto CMA's population is 4.6 times (363%) larger than Memphis, TN-MS-AR metro area's.
History
- Arkansas: Admitted to the Union on June 15, 1836, as the 25th state.
- Ontario: Joined Confederation on July 1, 1867, as one of the four founding provinces.
- In its current form, Arkansas is the older of the two by 31 years.
Arkansas vs Ontario Economy
GDP
- Arkansas's GDP is $188.3 billion (2024) vs Ontario's $873.9 billion.
- Ontario's economic output is 4.6 times (364%) larger than Arkansas'.
GDP per capita
- Arkansas: $60,984 per person vs Ontario: $54,132.
- Arkansas' GDP per capita is 1.1 times (13%) higher than Ontario's.
Official Websites
Arkansas official website · Ontario official website
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More Size Comparisons
All Arkansas 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.