The map above shows South Dakota and Saskatchewan side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
South Dakota vs Saskatchewan Geography
Land area: South Dakota has a land area of 75,808 square miles (196,342 km²), while Saskatchewan has 228,445 square miles (591,670 km²). Saskatchewan's land area is 3.0 times (201%) larger than South Dakota's.
Total area: South Dakota: 77,116 square miles (199,729 km²) vs Saskatchewan: 251,366 square miles (651,036 km²), including inland and coastal water. Saskatchewan's total area is 3.3 times (226%) larger than South Dakota's.
Length: South Dakota is 443 miles (712 km) long from north to south; Saskatchewan is 796 miles (1,282 km). Saskatchewan's north-south length is 1.8 times (80%) longer than South Dakota's.
Width: South Dakota spans 371 miles (597 km) east to west; Saskatchewan spans 391 miles (630 km). Saskatchewan's east-west width is 1.1 times (5%) wider than South Dakota's.
Highest point: South Dakota's highest point is Black Elk Peak at 7,198 feet (2,194 m); Saskatchewan's is Cypress Hills at 4,567 feet (1,392 m). Black Elk Peak is 2,631 feet higher than Cypress Hills.
Lowest point: South Dakota's lowest point is Big Stone Lake at 966 feet; Saskatchewan's is Lake Athabasca at 699 feet. Saskatchewan's lowest point is 267 feet lower.
South Dakota vs Saskatchewan Population and History
Population: South Dakota has a population of 924,669 (2024), while Saskatchewan has 1,265,936 (2026). Saskatchewan's population is 1.4 times (37%) larger than South Dakota's.
Population density: South Dakota: 12.2 people per square mile vs Saskatchewan: 5.5. South Dakota's population density is 2.2 times (122%) higher than Saskatchewan's.
Biggest city: South Dakota's biggest city is Sioux Falls with 209,289 people; Saskatchewan's is Saskatoon with 266,141. Saskatoon's population is 1.3 times (27%) larger than Sioux Falls'.
Largest metro area: South Dakota's largest metropolitan area is Sioux Falls, SD-MN metro area (308,266 people) vs Saskatchewan's Saskatoon CMA (317,480). Sioux Falls, SD-MN metro area and Saskatoon CMA have about the same population.
History: South Dakota: Admitted to the Union on November 2, 1889, as the 40th state. Saskatchewan: Joined Confederation on September 1, 1905. In its current form, South Dakota is the older of the two by 16 years.
South Dakota vs Saskatchewan Economy
GDP: South Dakota's GDP is $76.8 billion (2024) vs Saskatchewan's $82.4 billion. Saskatchewan's economic output is 1.1 times (7%) larger than South Dakota's.
GDP per capita: South Dakota: $83,052 per person vs Saskatchewan: $66,019. South Dakota's GDP per capita is 1.3 times (26%) higher than Saskatchewan's.
Official Websites
South Dakota official website · Saskatchewan official website
More Size Comparisons
All South Dakota size comparisons · All Saskatchewan 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.