The map above shows Kentucky and Ontario side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Kentucky vs Ontario Geography
Land area
- Kentucky has a land area of 39,485 square miles (102,267 km²), while Ontario has 354,342 square miles (917,741 km²).
- Ontario's land area is 9.0 times (797%) larger than Kentucky's.
Total area
- Kentucky: 40,406 square miles (104,651 km²) vs Ontario: 415,598 square miles (1,076,395 km²), including inland and coastal water.
- Ontario's total area is 10.3 times larger than Kentucky's.
Length
- Kentucky is 257 miles (414 km) long from north to south; Ontario is 1,085 miles (1,747 km).
- Ontario's north-south length is 4.2 times (322%) longer than Kentucky's.
Width
- Kentucky spans 418 miles (672 km) east to west; Ontario spans 1,013 miles (1,630 km).
- Ontario's east-west width is 2.4 times (142%) wider than Kentucky's.
Highest point
- Kentucky's highest point is Black Mountain at 4,134 feet (1,260 m); Ontario's is Ishpatina Ridge at 2,274 feet (693 m).
- Black Mountain is 1,860 feet higher than Ishpatina Ridge.
Lowest point
- Kentucky's lowest point is Mississippi River at 270 feet; Ontario's is Hudson Bay at 0 feet.
- Ontario's lowest point is 270 feet lower.
Kentucky vs Ontario Population and History
Population
- Kentucky has a population of 4,588,372 (2024), while Ontario has 16,136,480 (2026).
- Ontario's population is 3.5 times (252%) larger than Kentucky's.
Population density
- Kentucky: 116.2 people per square mile vs Ontario: 45.5.
- Kentucky's population density is 2.6 times (155%) higher than Ontario's.
Biggest city
- Kentucky's biggest city is Louisville with 640,796 people; Ontario's is Toronto with 2,794,356.
- Toronto's population is 4.4 times (336%) larger than Louisville's.
Largest metro area
- Kentucky's largest metropolitan area is Cincinnati, OH-KY-IN metro area (2,302,815 people) vs Ontario's Toronto CMA (6,202,225).
- Toronto CMA's population is 2.7 times (169%) larger than Cincinnati, OH-KY-IN metro area's.
History
- Kentucky: Admitted to the Union on June 1, 1792, as the 15th state.
- Ontario: Joined Confederation on July 1, 1867, as one of the four founding provinces.
- In its current form, Kentucky is the older of the two by 75 years.
Kentucky vs Ontario Economy
GDP
- Kentucky's GDP is $295.4 billion (2024) vs Ontario's $873.9 billion.
- Ontario's economic output is 3.0 times (196%) larger than Kentucky's.
GDP per capita
- Kentucky: $64,375 per person vs Ontario: $54,132.
- Kentucky's GDP per capita is 1.2 times (19%) higher than Ontario's.
Official Websites
Kentucky official website · Ontario official website
Download the Kentucky vs Ontario Size Comparison Map for free
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More Size Comparisons
All Kentucky 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.