The map above shows North Dakota and Ontario side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
North Dakota vs Ontario Geography
Land area: North Dakota has a land area of 68,994 square miles (178,694 km²), while Ontario has 354,342 square miles (917,741 km²). Ontario's land area is 5.1 times (414%) larger than North Dakota's.
Total area: North Dakota: 70,699 square miles (183,109 km²) vs Ontario: 415,598 square miles (1,076,395 km²), including inland and coastal water. Ontario's total area is 5.9 times (488%) larger than North Dakota's.
Length: North Dakota is 338 miles (544 km) long from north to south; Ontario is 1,085 miles (1,747 km). Ontario's north-south length is 3.2 times (221%) longer than North Dakota's.
Width: North Dakota spans 408 miles (657 km) east to west; Ontario spans 1,013 miles (1,630 km). Ontario's east-west width is 2.5 times (148%) wider than North Dakota's.
Highest point: North Dakota's highest point is White Butte at 3,500 feet (1,067 m); Ontario's is Ishpatina Ridge at 2,274 feet (693 m). White Butte is 1,226 feet higher than Ishpatina Ridge.
Lowest point: North Dakota's lowest point is Red River of the North at 754 feet; Ontario's is Hudson Bay at 0 feet. Ontario's lowest point is 754 feet lower.
North Dakota vs Ontario Population and History
Population: North Dakota has a population of 796,568 (2024), while Ontario has 16,136,480 (2026). Ontario's population is 20.3 times larger than North Dakota's.
Population density: North Dakota: 11.5 people per square mile vs Ontario: 45.5. Ontario's population density is 4.0 times (296%) higher than North Dakota's.
Biggest city: North Dakota's biggest city is Fargo with 136,285 people; Ontario's is Toronto with 2,794,356. Toronto's population is 20.5 times larger than Fargo's.
Largest metro area: North Dakota's largest metropolitan area is Fargo, ND-MN metro area (267,793 people) vs Ontario's Toronto CMA (6,202,225). Toronto CMA's population is 23.2 times larger than Fargo, ND-MN metro area's.
History: North Dakota: Admitted to the Union on November 2, 1889, as the 39th state. 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 22 years.
North Dakota vs Ontario Economy
GDP: North Dakota's GDP is $80.1 billion (2024) vs Ontario's $873.9 billion. Ontario's economic output is 10.9 times larger than North Dakota's.
GDP per capita: North Dakota: $100,504 per person vs Ontario: $54,132. North Dakota's GDP per capita is 1.9 times (86%) higher than Ontario's.
Official Websites
North Dakota official website · Ontario official website
More Size Comparisons
All North Dakota 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.