The map above shows Northern Mariana Islands and Ontario side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Northern Mariana Islands vs Ontario Geography
Land area
- Northern Mariana Islands has a land area of 179 square miles (464 km²), while Ontario has 354,342 square miles (917,741 km²).
- Ontario's land area is 1,977.9 times larger than Northern Mariana Islands'.
Total area
- Northern Mariana Islands: 179 square miles (464 km²) vs Ontario: 415,598 square miles (1,076,395 km²), including inland and coastal water.
- Ontario's total area is 2,319.8 times larger than Northern Mariana Islands'.
Length
- Northern Mariana Islands is 326 miles (524 km) long from north to south; Ontario is 1,085 miles (1,747 km).
- Ontario's north-south length is 3.3 times (233%) longer than Northern Mariana Islands'.
Width
- Northern Mariana Islands spans 278 miles (448 km) east to west; Ontario spans 1,013 miles (1,630 km).
- Ontario's east-west width is 3.6 times (264%) wider than Northern Mariana Islands'.
Highest point
- Northern Mariana Islands's highest point is Agrihan at 3,166 feet (965 m); Ontario's is Ishpatina Ridge at 2,274 feet (693 m).
- Agrihan is 892 feet higher than Ishpatina Ridge.
Lowest point
- Northern Mariana Islands'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.
Northern Mariana Islands vs Ontario Population and History
Population
- Northern Mariana Islands has a population of 47,329 (2020), while Ontario has 16,136,480 (2026).
- Ontario's population is 340.9 times larger than Northern Mariana Islands'.
Population density
- Northern Mariana Islands: 264.4 people per square mile vs Ontario: 45.5.
- Northern Mariana Islands' population density is 5.8 times (481%) higher than Ontario's.
History
- Northern Mariana Islands: A US commonwealth since 1978.
- 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 111 years.
Official Websites
Northern Mariana Islands official website · Ontario official website
Download the Northern Mariana Islands vs Ontario Size Comparison Map for free
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More Size Comparisons
All Northern Mariana Islands 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.