The map above shows South Australia and United Kingdom side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
South Australia vs United Kingdom Geography
Land area
- South Australia has a land area of 380,048 square miles (984,321 km²), while United Kingdom has 93,410 square miles (241,930 km²).
- South Australia's land area is 4.1 times (307%) larger than United Kingdom's.
Total area
- South Australia: 380,048 square miles (984,321 km²) vs United Kingdom: 94,058 square miles (243,610 km²), including inland and coastal water.
- South Australia's total area is 4.0 times (304%) larger than United Kingdom's.
Length
- South Australia is 1,078 miles (1,735 km) long from north to south; United Kingdom is 747 miles (1,202 km).
- South Australia's north-south length is 1.4 times (44%) longer than United Kingdom's.
Width
- South Australia spans 825 miles (1,328 km) east to west; United Kingdom spans 429 miles (690 km).
- South Australia's east-west width is 1.9 times (92%) wider than United Kingdom's.
Highest point
- South Australia's highest point is Mount Woodroffe at 4,708 feet (1,435 m); United Kingdom's is Ben Nevis at 4,413 feet (1,345 m).
- Mount Woodroffe is 295 feet higher than Ben Nevis.
Lowest point
- South Australia's lowest point is Lake Eyre at -49 feet; United Kingdom's is The Fens (Holme Fen) at -10 feet.
- South Australia's lowest point is 39 feet lower.
South Australia vs United Kingdom Population and History
Population
- South Australia has a population of 1,908,182 (2025), while United Kingdom has 69,487,000 (2025).
- United Kingdom's population is 36.4 times larger than South Australia's.
Population density
- South Australia: 5.0 people per square mile vs United Kingdom: 743.9.
- United Kingdom's population density is 148.8 times higher than South Australia's.
Largest metro area
- South Australia's largest metropolitan area is Greater Adelaide (1,491,015 people) vs United Kingdom's London (10,416,420).
- London's population is 7.0 times (599%) larger than Greater Adelaide's.
History
- South Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1836.
- United Kingdom: Formed as the United Kingdom of Great Britain and Ireland on January 1, 1801; took its current form in 1922.
- In its current form, United Kingdom is the older of the two by 100 years.
South Australia vs United Kingdom Economy
GDP
- South Australia's GDP is $100.2 billion (2025) vs United Kingdom's $4,002.6 billion.
- United Kingdom's economic output is 39.9 times larger than South Australia's.
GDP per capita
- South Australia: $52,511 per person vs United Kingdom: $57,602.
- United Kingdom's GDP per capita is 1.1 times (10%) higher than South Australia's.
Official Websites
South Australia official website · United Kingdom official website
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More Size Comparisons
All South Australia size comparisons · All United Kingdom 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.