The map above shows Alaska and South Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Alaska vs South Australia Geography
Land area: Alaska has a land area of 571,242 square miles (1,479,509 km²), while South Australia has 380,048 square miles (984,321 km²). Alaska's land area is 1.5 times (50%) larger than South Australia's.
Total area: Alaska: 665,725 square miles (1,724,220 km²) vs South Australia: 380,048 square miles (984,321 km²), including inland and coastal water. Alaska's total area is 1.8 times (75%) larger than South Australia's.
Length: Alaska is 1,201 miles (1,933 km) long from north to south; South Australia is 1,078 miles (1,735 km). Alaska's north-south length is 1.1 times (11%) longer than South Australia's.
Width: Alaska spans 1,544 miles (2,485 km) east to west; South Australia spans 825 miles (1,328 km). Alaska's east-west width is 1.9 times (87%) wider than South Australia's.
Highest point: Alaska's highest point is Denali at 20,235 feet (6,168 m); South Australia's is Mount Woodroffe at 4,708 feet (1,435 m). Denali is 15,527 feet higher than Mount Woodroffe.
Lowest point: Alaska's lowest point is Pacific Ocean at 0 feet; South Australia's is Lake Eyre at -49 feet. South Australia's lowest point is 49 feet lower.
Alaska vs South Australia Population and History
Population: Alaska has a population of 740,133 (2024), while South Australia has 1,908,182 (2025). South Australia's population is 2.6 times (158%) larger than Alaska's.
Population density: Alaska: 1.3 people per square mile vs South Australia: 5.0. South Australia's population density is 3.8 times (285%) higher than Alaska's.
Largest metro area: Alaska's largest metropolitan area is Anchorage, AK metro area (407,213 people) vs South Australia's Greater Adelaide (1,491,015). Greater Adelaide's population is 3.7 times (266%) larger than Anchorage, AK metro area's.
History: Alaska: Admitted to the Union on January 3, 1959, as the 49th state. South Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1836. In its current form, South Australia is the older of the two by 58 years.
Alaska vs South Australia Economy
GDP: Alaska's GDP is $71.6 billion (2024) vs South Australia's $100.2 billion. South Australia's economic output is 1.4 times (40%) larger than Alaska's.
GDP per capita: Alaska: $96,695 per person vs South Australia: $52,511. Alaska's GDP per capita is 1.8 times (84%) higher than South Australia's.
Official Websites
Alaska official website · South Australia official website
More Size Comparisons
All Alaska 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.