The map above shows South Dakota and US Virgin Islands side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
South Dakota vs US Virgin Islands Geography
Land area: South Dakota has a land area of 75,808 square miles (196,342 km²), while US Virgin Islands has 134 square miles (346 km²). South Dakota's land area is 567.5 times larger than US Virgin Islands'.
Total area: South Dakota: 77,116 square miles (199,729 km²) vs US Virgin Islands: 737 square miles (1,910 km²), including inland and coastal water. South Dakota's total area is 104.6 times larger than US Virgin Islands'.
Length: South Dakota is 443 miles (712 km) long from north to south; US Virgin Islands is 47 miles (76 km). South Dakota's north-south length is 9.4 times (843%) longer than US Virgin Islands'.
Width: South Dakota spans 371 miles (597 km) east to west; US Virgin Islands spans 52 miles (83 km). South Dakota's east-west width is 7.1 times (613%) wider than US Virgin Islands'.
Highest point: South Dakota's highest point is Black Elk Peak at 7,198 feet (2,194 m); US Virgin Islands's is Crown Mountain at 1,555 feet (474 m). Black Elk Peak is 5,643 feet higher than Crown Mountain.
Lowest point: South Dakota's lowest point is Big Stone Lake at 966 feet; US Virgin Islands's is Caribbean Sea at 0 feet. US Virgin Islands's lowest point is 966 feet lower.
South Dakota vs US Virgin Islands Population and History
Population: South Dakota has a population of 924,669 (2024), while US Virgin Islands has 87,146 (2020). South Dakota's population is 10.6 times larger than US Virgin Islands'.
Population density: South Dakota: 12.2 people per square mile vs US Virgin Islands: 650.3. US Virgin Islands' population density is 53.3 times higher than South Dakota's.
History: South Dakota: Admitted to the Union on November 2, 1889, as the 40th state. US Virgin Islands: A US territory since 1917, purchased from Denmark. In its current form, South Dakota is the older of the two by 28 years.
Official Websites
South Dakota official website · US Virgin Islands official website
More Size Comparisons
All South Dakota size comparisons · All US Virgin Islands 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.