The map above shows District of Columbia and South Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
District of Columbia vs South Australia Geography
Land area
- District of Columbia has a land area of 61 square miles (158 km²), while South Australia has 380,048 square miles (984,321 km²).
- South Australia's land area is 6,229.9 times larger than District of Columbia's.
Total area
- District of Columbia: 68 square miles (177 km²) vs South Australia: 380,048 square miles (984,321 km²), including inland and coastal water.
- South Australia's total area is 5,561.1 times larger than District of Columbia's.
Length
- District of Columbia is 13 miles (22 km) long from north to south; South Australia is 1,078 miles (1,735 km).
- South Australia's north-south length is 82.9 times longer than District of Columbia's.
Width
- District of Columbia spans 12 miles (19 km) east to west; South Australia spans 825 miles (1,328 km).
- South Australia's east-west width is 68.8 times wider than District of Columbia's.
Highest point
- District of Columbia's highest point is Fort Reno at 429 feet (131 m); South Australia's is Mount Woodroffe at 4,708 feet (1,435 m).
- Mount Woodroffe is 4,279 feet higher than Fort Reno.
Lowest point
- District of Columbia's lowest point is Potomac River at 0 feet; South Australia's is Lake Eyre at -49 feet.
- South Australia's lowest point is 49 feet lower.
District of Columbia vs South Australia Population and History
Population
- District of Columbia has a population of 702,250 (2024), while South Australia has 1,908,182 (2025).
- South Australia's population is 2.7 times (172%) larger than District of Columbia's.
Population density
- District of Columbia: 11,493.5 people per square mile vs South Australia: 5.0.
- District of Columbia's population density is 2,298.7 times higher than South Australia's.
Largest metro area
- District of Columbia's largest metropolitan area is Washington-Arlington-Alexandria, DC-VA-MD-WV metro area (6,436,489 people) vs South Australia's Greater Adelaide (1,491,015).
- Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's population is 4.3 times (332%) larger than Greater Adelaide's.
History
- District of Columbia: The federal district, established by the Residence Act on July 16, 1790; not a state.
- South Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1836.
- In its current form, District of Columbia is the older of the two by 111 years.
District of Columbia vs South Australia Economy
GDP
- District of Columbia's GDP is $184.3 billion (2024) vs South Australia's $100.2 billion.
- District of Columbia's economic output is 1.8 times (84%) larger than South Australia's.
GDP per capita
- District of Columbia: $262,439 per person vs South Australia: $52,511.
- District of Columbia's GDP per capita is 5.0 times (400%) higher than South Australia's.
Official Websites
District of Columbia official website · South Australia official website
Download the District of Columbia vs South Australia Size Comparison Map for free
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More Size Comparisons
All District of Columbia 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.