The map above shows Pennsylvania and Ontario side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Pennsylvania vs Ontario Geography
Land area
- Pennsylvania has a land area of 44,742 square miles (115,882 km²), while Ontario has 354,342 square miles (917,741 km²).
- Ontario's land area is 7.9 times (692%) larger than Pennsylvania's.
Total area
- Pennsylvania: 46,054 square miles (119,279 km²) vs Ontario: 415,598 square miles (1,076,395 km²), including inland and coastal water.
- Ontario's total area is 9.0 times (802%) larger than Pennsylvania's.
Length
- Pennsylvania is 284 miles (458 km) long from north to south; Ontario is 1,085 miles (1,747 km).
- Ontario's north-south length is 3.8 times (282%) longer than Pennsylvania's.
Width
- Pennsylvania spans 307 miles (495 km) east to west; Ontario spans 1,013 miles (1,630 km).
- Ontario's east-west width is 3.3 times (230%) wider than Pennsylvania's.
Highest point
- Pennsylvania's highest point is Mount Davis at 3,210 feet (978 m); Ontario's is Ishpatina Ridge at 2,274 feet (693 m).
- Mount Davis is 936 feet higher than Ishpatina Ridge.
Lowest point
- Pennsylvania's lowest point is Delaware River at 0 feet; Ontario's is Hudson Bay at 0 feet.
- Both lowest points are at or near sea level.
Pennsylvania vs Ontario Population and History
Population
- Pennsylvania has a population of 13,078,751 (2024), while Ontario has 16,136,480 (2026).
- Ontario's population is 1.2 times (23%) larger than Pennsylvania's.
Population density
- Pennsylvania: 292.3 people per square mile vs Ontario: 45.5.
- Pennsylvania's population density is 6.4 times (542%) higher than Ontario's.
Biggest city
- Pennsylvania's biggest city is Philadelphia with 1,573,916 people; Ontario's is Toronto with 2,794,356.
- Toronto's population is 1.8 times (78%) larger than Philadelphia's.
Largest metro area
- Pennsylvania's largest metropolitan area is Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area (6,330,422 people) vs Ontario's Toronto CMA (6,202,225).
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area and Toronto CMA have about the same population.
History
- Pennsylvania: Admitted to the Union on December 12, 1787, as the 2nd state.
- Ontario: Joined Confederation on July 1, 1867, as one of the four founding provinces.
- In its current form, Pennsylvania is the older of the two by 80 years.
Pennsylvania vs Ontario Economy
GDP
- Pennsylvania's GDP is $1,007.9 billion (2024) vs Ontario's $873.9 billion.
- Pennsylvania's economic output is 1.2 times (15%) larger than Ontario's.
GDP per capita
- Pennsylvania: $77,062 per person vs Ontario: $54,132.
- Pennsylvania's GDP per capita is 1.4 times (42%) higher than Ontario's.
Official Websites
Pennsylvania official website · Ontario official website
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More Size Comparisons
All Pennsylvania 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.