The map above shows Colorado and South Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Colorado vs South Australia Geography
Land area
- Colorado has a land area of 103,637 square miles (268,419 km²), while South Australia has 380,048 square miles (984,321 km²).
- South Australia's land area is 3.7 times (267%) larger than Colorado's.
Total area
- Colorado: 104,095 square miles (269,605 km²) vs South Australia: 380,048 square miles (984,321 km²), including inland and coastal water.
- South Australia's total area is 3.7 times (265%) larger than Colorado's.
Length
- Colorado is 467 miles (751 km) long from north to south; South Australia is 1,078 miles (1,735 km).
- South Australia's north-south length is 2.3 times (131%) longer than Colorado's.
Width
- Colorado spans 387 miles (622 km) east to west; South Australia spans 825 miles (1,328 km).
- South Australia's east-west width is 2.1 times (113%) wider than Colorado's.
Highest point
- Colorado's highest point is Mount Elbert at 14,422 feet (4,396 m); South Australia's is Mount Woodroffe at 4,708 feet (1,435 m).
- Mount Elbert is 9,714 feet higher than Mount Woodroffe.
Lowest point
- Colorado's lowest point is Arikaree River at 3,326 feet; South Australia's is Lake Eyre at -49 feet.
- South Australia's lowest point is 3,375 feet lower.
Colorado vs South Australia Population and History
Population
- Colorado has a population of 5,957,493 (2024), while South Australia has 1,908,182 (2025).
- Colorado's population is 3.1 times (212%) larger than South Australia's.
Population density
- Colorado: 57.5 people per square mile vs South Australia: 5.0.
- Colorado's population density is 11.5 times higher than South Australia's.
Largest metro area
- Colorado's largest metropolitan area is Denver-Aurora-Centennial, CO metro area (3,052,498 people) vs South Australia's Greater Adelaide (1,491,015).
- Denver-Aurora-Centennial, CO metro area's population is 2.0 times (105%) larger than Greater Adelaide's.
History
- Colorado: Admitted to the Union on August 1, 1876, as the 38th state.
- South Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1836.
- In its current form, Colorado is the older of the two by 25 years.
Colorado vs South Australia Economy
GDP
- Colorado's GDP is $557.6 billion (2024) vs South Australia's $100.2 billion.
- Colorado's economic output is 5.6 times (456%) larger than South Australia's.
GDP per capita
- Colorado: $93,602 per person vs South Australia: $52,511.
- Colorado's GDP per capita is 1.8 times (78%) higher than South Australia's.
Official Websites
Colorado official website · South Australia official website
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More Size Comparisons
All Colorado size comparisons · All South Australia 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.