The map above shows New Zealand and Ontario side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
New Zealand vs Ontario Geography
Land area: New Zealand has a land area of 102,138 square miles (264,537 km²), while Ontario has 354,342 square miles (917,741 km²). Ontario's land area is 3.5 times (247%) larger than New Zealand's.
Total area: New Zealand: 103,799 square miles (268,838 km²) vs Ontario: 415,598 square miles (1,076,395 km²), including inland and coastal water. Ontario's total area is 4.0 times (300%) larger than New Zealand's.
Length: New Zealand is 1,185 miles (1,908 km) long from north to south; Ontario is 1,085 miles (1,747 km). New Zealand's north-south length is 1.1 times (9%) longer than Ontario's.
Width: New Zealand spans 969 miles (1,559 km) east to west; Ontario spans 1,013 miles (1,630 km). New Zealand and Ontario have about the same east-west width.
Highest point: New Zealand's highest point is Aoraki / Mount Cook at 12,218 feet (3,724 m); Ontario's is Ishpatina Ridge at 2,274 feet (693 m). Aoraki / Mount Cook is 9,944 feet higher than Ishpatina Ridge.
Lowest point: New Zealand's lowest point is Taieri Plains at -7 feet; Ontario's is Hudson Bay at 0 feet. New Zealand's lowest point is 7 feet lower.
New Zealand vs Ontario Population and History
Population: New Zealand has a population of 5,357,300 (2026), while Ontario has 16,136,480 (2026). Ontario's population is 3.0 times (201%) larger than New Zealand's.
Population density: New Zealand: 52.5 people per square mile vs Ontario: 45.5. New Zealand's population density is 1.2 times (15%) higher than Ontario's.
Largest metro area: New Zealand's largest metropolitan area is Auckland Region (1,715,600 people) vs Ontario's Toronto CMA (6,202,225). Toronto CMA's population is 3.6 times (262%) larger than Auckland Region's.
History: New Zealand: A dominion from September 26, 1907; fully independent by statute in 1947. 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 40 years.
New Zealand vs Ontario Economy
GDP: New Zealand's GDP is $264.1 billion (2025) vs Ontario's $873.9 billion. Ontario's economic output is 3.3 times (231%) larger than New Zealand's.
GDP per capita: New Zealand: $49,591 per person vs Ontario: $54,132. Ontario's GDP per capita is 1.1 times (9%) higher than New Zealand's.
Official Websites
New Zealand official website · Ontario official website
More Size Comparisons
All New Zealand 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.