The map above shows Delaware and South Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Delaware vs South Australia Geography
Land area
- Delaware has a land area of 1,949 square miles (5,047 km²), while South Australia has 380,048 square miles (984,321 km²).
- South Australia's land area is 195.0 times larger than Delaware's.
Total area
- Delaware: 2,489 square miles (6,446 km²) vs South Australia: 380,048 square miles (984,321 km²), including inland and coastal water.
- South Australia's total area is 152.7 times larger than Delaware's.
Length
- Delaware is 98 miles (158 km) long from north to south; South Australia is 1,078 miles (1,735 km).
- South Australia's north-south length is 11.0 times longer than Delaware's.
Width
- Delaware spans 96 miles (155 km) east to west; South Australia spans 825 miles (1,328 km).
- South Australia's east-west width is 8.6 times (759%) wider than Delaware's.
Highest point
- Delaware's highest point is Ebright Azimuth at 450 feet (137 m); South Australia's is Mount Woodroffe at 4,708 feet (1,435 m).
- Mount Woodroffe is 4,258 feet higher than Ebright Azimuth.
Lowest point
- Delaware's lowest point is Atlantic Ocean at 0 feet; South Australia's is Lake Eyre at -49 feet.
- South Australia's lowest point is 49 feet lower.
Delaware vs South Australia Population and History
Population
- Delaware has a population of 1,051,917 (2024), while South Australia has 1,908,182 (2025).
- South Australia's population is 1.8 times (81%) larger than Delaware's.
Population density
- Delaware: 539.9 people per square mile vs South Australia: 5.0.
- Delaware's population density is 108.0 times higher than South Australia's.
Largest metro area
- Delaware's largest metropolitan area is Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area (6,330,422 people) vs South Australia's Greater Adelaide (1,491,015).
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area's population is 4.2 times (325%) larger than Greater Adelaide's.
History
- Delaware: Admitted to the Union on December 7, 1787, as the 1st state.
- South Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1836.
- In its current form, Delaware is the older of the two by 114 years.
Delaware vs South Australia Economy
GDP
- Delaware's GDP is $111.0 billion (2024) vs South Australia's $100.2 billion.
- Delaware's economic output is 1.1 times (11%) larger than South Australia's.
GDP per capita
- Delaware: $105,495 per person vs South Australia: $52,511.
- Delaware's GDP per capita is 2.0 times (101%) higher than South Australia's.
Official Websites
Delaware official website · South Australia official website
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More Size Comparisons
All Delaware 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.