The map above shows South Dakota and Tasmania side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
South Dakota vs Tasmania Geography
Land area: South Dakota has a land area of 75,808 square miles (196,342 km²), while Tasmania has 26,410 square miles (68,401 km²). South Dakota's land area is 2.9 times (187%) larger than Tasmania's.
Total area: South Dakota: 77,116 square miles (199,729 km²) vs Tasmania: 26,410 square miles (68,401 km²), including inland and coastal water. South Dakota's total area is 2.9 times (192%) larger than Tasmania's.
Length: South Dakota is 443 miles (712 km) long from north to south; Tasmania is 318 miles (511 km). South Dakota's north-south length is 1.4 times (39%) longer than Tasmania's.
Width: South Dakota spans 371 miles (597 km) east to west; Tasmania spans 248 miles (399 km). South Dakota's east-west width is 1.5 times (50%) wider than Tasmania's.
Highest point: South Dakota's highest point is Black Elk Peak at 7,198 feet (2,194 m); Tasmania's is Mount Ossa at 5,305 feet (1,617 m). Black Elk Peak is 1,893 feet higher than Mount Ossa.
Lowest point: South Dakota's lowest point is Big Stone Lake at 966 feet; Tasmania's is Southern Ocean at 0 feet. Tasmania's lowest point is 966 feet lower.
South Dakota vs Tasmania Population and History
Population: South Dakota has a population of 924,669 (2024), while Tasmania has 576,659 (2025). South Dakota's population is 1.6 times (60%) larger than Tasmania's.
Population density: South Dakota: 12.2 people per square mile vs Tasmania: 21.8. Tasmania's population density is 1.8 times (79%) higher than South Dakota's.
Largest metro area: South Dakota's largest metropolitan area is Sioux Falls, SD-MN metro area (308,266 people) vs Tasmania's Greater Hobart (255,250). Sioux Falls, SD-MN metro area's population is 1.2 times (21%) larger than Greater Hobart's.
History: South Dakota: Admitted to the Union on November 2, 1889, as the 40th state. Tasmania: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1825. In its current form, South Dakota is the older of the two by 12 years.
South Dakota vs Tasmania Economy
GDP: South Dakota's GDP is $76.8 billion (2024) vs Tasmania's $28.3 billion. South Dakota's economic output is 2.7 times (171%) larger than Tasmania's.
GDP per capita: South Dakota: $83,052 per person vs Tasmania: $49,076. South Dakota's GDP per capita is 1.7 times (69%) higher than Tasmania's.
Official Websites
South Dakota official website · Tasmania official website
More Size Comparisons
All South Dakota size comparisons · All Tasmania 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.