The map above shows Ontario and South Africa side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Ontario vs South Africa Geography
Land area: Ontario has a land area of 354,342 square miles (917,741 km²), while South Africa has 468,909 square miles (1,214,470 km²). South Africa's land area is 1.3 times (32%) larger than Ontario's.
Total area: Ontario: 415,598 square miles (1,076,395 km²) vs South Africa: 471,445 square miles (1,221,037 km²), including inland and coastal water. South Africa's total area is 1.1 times (13%) larger than Ontario's.
Length: Ontario is 1,085 miles (1,747 km) long from north to south; South Africa is 1,050 miles (1,690 km). Ontario and South Africa have about the same north-south length.
Width: Ontario spans 1,013 miles (1,630 km) east to west; South Africa spans 1,012 miles (1,628 km). Ontario and South Africa have about the same east-west width.
Highest point: Ontario's highest point is Ishpatina Ridge at 2,274 feet (693 m); South Africa's is Mafadi at 11,319 feet (3,450 m). Mafadi is 9,045 feet higher than Ishpatina Ridge.
Lowest point: Ontario's lowest point is Hudson Bay at 0 feet; South Africa's is Indian Ocean at 0 feet. Both lowest points are at or near sea level.
Ontario vs South Africa Population and History
Population: Ontario has a population of 16,136,480 (2026), while South Africa has 63,522,380 (2026). South Africa's population is 3.9 times (294%) larger than Ontario's.
Population density: Ontario: 45.5 people per square mile vs South Africa: 135.5. South Africa's population density is 3.0 times (198%) higher than Ontario's.
Biggest city: Ontario's biggest city is Toronto with 2,794,356 people; South Africa's is Johannesburg with 4,803,262. Johannesburg's population is 1.7 times (72%) larger than Toronto's.
Largest metro area: Ontario's largest metropolitan area is Toronto CMA (6,202,225 people) vs South Africa's Johannesburg (7,077,175). Johannesburg's population is 1.1 times (14%) larger than Toronto CMA's.
History: Ontario: Joined Confederation on July 1, 1867, as one of the four founding provinces. South Africa: Formed as the Union of South Africa on May 31, 1910; a republic since 1961. In its current form, Ontario is the older of the two by 43 years.
Ontario vs South Africa Economy
GDP: Ontario's GDP is $873.9 billion (2024) vs South Africa's $427.2 billion. Ontario's economic output is 2.0 times (105%) larger than South Africa's.
GDP per capita: Ontario: $54,132 per person vs South Africa: $6,598. Ontario's GDP per capita is 8.2 times (720%) higher than South Africa's.
Official Websites
Ontario official website · South Africa official website
More Size Comparisons
All Ontario size comparisons · All South Africa 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.