The map above shows New South Wales and Ontario side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
New South Wales vs Ontario Geography
Land area: New South Wales has a land area of 309,130 square miles (800,642 km²), while Ontario has 354,342 square miles (917,741 km²). Ontario's land area is 1.1 times (15%) larger than New South Wales'.
Total area: New South Wales: 309,130 square miles (800,642 km²) vs Ontario: 415,598 square miles (1,076,395 km²), including inland and coastal water. Ontario's total area is 1.3 times (34%) larger than New South Wales'.
Length: New South Wales is 678 miles (1,092 km) long from north to south; Ontario is 1,085 miles (1,747 km). Ontario's north-south length is 1.6 times (60%) longer than New South Wales'.
Width: New South Wales spans 831 miles (1,338 km) east to west; Ontario spans 1,013 miles (1,630 km). Ontario's east-west width is 1.2 times (22%) wider than New South Wales'.
Highest point: New South Wales's highest point is Mount Kosciuszko at 7,310 feet (2,228 m); Ontario's is Ishpatina Ridge at 2,274 feet (693 m). Mount Kosciuszko is 5,036 feet higher than Ishpatina Ridge.
Lowest point: New South Wales's lowest point is Pacific Ocean at 0 feet; Ontario's is Hudson Bay at 0 feet. Both lowest points are at or near sea level.
New South Wales vs Ontario Population and History
Population: New South Wales has a population of 8,624,534 (2025), while Ontario has 16,136,480 (2026). Ontario's population is 1.9 times (87%) larger than New South Wales'.
Population density: New South Wales: 27.9 people per square mile vs Ontario: 45.5. Ontario's population density is 1.6 times (63%) higher than New South Wales'.
Largest metro area: New South Wales's largest metropolitan area is Greater Sydney (5,638,830 people) vs Ontario's Toronto CMA (6,202,225). Toronto CMA's population is 1.1 times (10%) larger than Greater Sydney's.
History: New South Wales: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1788. 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 34 years.
New South Wales vs Ontario Economy
GDP: New South Wales's GDP is $547.1 billion (2025) vs Ontario's $873.9 billion. Ontario's economic output is 1.6 times (60%) larger than New South Wales'.
GDP per capita: New South Wales: $63,435 per person vs Ontario: $54,132. New South Wales' GDP per capita is 1.2 times (17%) higher than Ontario's.
Official Websites
New South Wales official website · Ontario official website
More Size Comparisons
All New South Wales 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.