The map above shows Newfoundland and Labrador and Ontario side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Newfoundland and Labrador vs Ontario Geography
Land area: Newfoundland and Labrador has a land area of 144,353 square miles (373,872 km²), while Ontario has 354,342 square miles (917,741 km²). Ontario's land area is 2.5 times (145%) larger than Newfoundland and Labrador's.
Total area: Newfoundland and Labrador: 156,453 square miles (405,212 km²) vs Ontario: 415,598 square miles (1,076,395 km²), including inland and coastal water. Ontario's total area is 2.7 times (166%) larger than Newfoundland and Labrador's.
Length: Newfoundland and Labrador is 1,045 miles (1,681 km) long from north to south; Ontario is 1,085 miles (1,747 km). Newfoundland and Labrador and Ontario have about the same north-south length.
Width: Newfoundland and Labrador spans 799 miles (1,286 km) east to west; Ontario spans 1,013 miles (1,630 km). Ontario's east-west width is 1.3 times (27%) wider than Newfoundland and Labrador's.
Highest point: Newfoundland and Labrador's highest point is Mount Caubvick at 5,420 feet (1,652 m); Ontario's is Ishpatina Ridge at 2,274 feet (693 m). Mount Caubvick is 3,146 feet higher than Ishpatina Ridge.
Lowest point: Newfoundland and Labrador's lowest point is Atlantic Ocean at 0 feet; Ontario's is Hudson Bay at 0 feet. Both lowest points are at or near sea level.
Newfoundland and Labrador vs Ontario Population and History
Population: Newfoundland and Labrador has a population of 548,557 (2026), while Ontario has 16,136,480 (2026). Ontario's population is 29.4 times larger than Newfoundland and Labrador's.
Population density: Newfoundland and Labrador: 3.8 people per square mile vs Ontario: 45.5. Ontario's population density is 12.0 times higher than Newfoundland and Labrador's.
Biggest city: Newfoundland and Labrador's biggest city is St. John's with 110,525 people; Ontario's is Toronto with 2,794,356. Toronto's population is 25.3 times larger than St. John's'.
Largest metro area: Newfoundland and Labrador's largest metropolitan area is St. John's CMA (212,579 people) vs Ontario's Toronto CMA (6,202,225). Toronto CMA's population is 29.2 times larger than St. John's CMA's.
History: Newfoundland and Labrador: Joined Confederation on March 31, 1949, the last province to join. 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 82 years.
Newfoundland and Labrador vs Ontario Economy
GDP: Newfoundland and Labrador's GDP is $30.8 billion (2024) vs Ontario's $873.9 billion. Ontario's economic output is 28.4 times larger than Newfoundland and Labrador's.
GDP per capita: Newfoundland and Labrador: $56,364 per person vs Ontario: $54,132. Newfoundland and Labrador and Ontario have about the same GDP per capita.
Official Websites
Newfoundland and Labrador official website · Ontario official website
More Size Comparisons
All Newfoundland and Labrador 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.