The map above shows Mississippi and Ontario side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Mississippi vs Ontario Geography
Land area: Mississippi has a land area of 46,925 square miles (121,534 km²), while Ontario has 354,342 square miles (917,741 km²). Ontario's land area is 7.6 times (655%) larger than Mississippi's.
Total area: Mississippi: 48,436 square miles (125,448 km²) vs Ontario: 415,598 square miles (1,076,395 km²), including inland and coastal water. Ontario's total area is 8.6 times (758%) larger than Mississippi's.
Length: Mississippi is 337 miles (542 km) long from north to south; Ontario is 1,085 miles (1,747 km). Ontario's north-south length is 3.2 times (222%) longer than Mississippi's.
Width: Mississippi spans 340 miles (547 km) east to west; Ontario spans 1,013 miles (1,630 km). Ontario's east-west width is 3.0 times (198%) wider than Mississippi's.
Highest point: Mississippi's highest point is Woodall Mountain at 805 feet (245 m); Ontario's is Ishpatina Ridge at 2,274 feet (693 m). Ishpatina Ridge is 1,469 feet higher than Woodall Mountain.
Lowest point: Mississippi's lowest point is Gulf of Mexico at 0 feet; Ontario's is Hudson Bay at 0 feet. Both lowest points are at or near sea level.
Mississippi vs Ontario Population and History
Population: Mississippi has a population of 2,943,045 (2024), while Ontario has 16,136,480 (2026). Ontario's population is 5.5 times (448%) larger than Mississippi's.
Population density: Mississippi: 62.7 people per square mile vs Ontario: 45.5. Mississippi's population density is 1.4 times (38%) higher than Ontario's.
Biggest city: Mississippi's biggest city is Jackson with 141,449 people; Ontario's is Toronto with 2,794,356. Toronto's population is 19.8 times larger than Jackson's.
Largest metro area: Mississippi's largest metropolitan area is Memphis, TN-MS-AR metro area (1,339,345 people) vs Ontario's Toronto CMA (6,202,225). Toronto CMA's population is 4.6 times (363%) larger than Memphis, TN-MS-AR metro area's.
History: Mississippi: Admitted to the Union on December 10, 1817, as the 20th state. Ontario: Joined Confederation on July 1, 1867, as one of the four founding provinces. In its current form, Mississippi is the older of the two by 50 years.
Mississippi vs Ontario Economy
GDP: Mississippi's GDP is $158.2 billion (2024) vs Ontario's $873.9 billion. Ontario's economic output is 5.5 times (452%) larger than Mississippi's.
GDP per capita: Mississippi: $53,751 per person vs Ontario: $54,132. Mississippi and Ontario have about the same GDP per capita.
Official Websites
Mississippi official website · Ontario official website
More Size Comparisons
All Mississippi 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.