The map above shows Northern Ireland and South Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Northern Ireland vs South Australia Geography
Land area
- Northern Ireland has a land area of 5,236 square miles (13,562 km²), while South Australia has 380,048 square miles (984,321 km²).
- South Australia's land area is 72.6 times larger than Northern Ireland's.
Total area
- Northern Ireland: 5,456 square miles (14,130 km²) vs South Australia: 380,048 square miles (984,321 km²), including inland and coastal water.
- South Australia's total area is 69.7 times larger than Northern Ireland's.
Length
- Northern Ireland is 83 miles (134 km) long from north to south; South Australia is 1,078 miles (1,735 km).
- South Australia's north-south length is 13.0 times longer than Northern Ireland's.
Width
- Northern Ireland spans 107 miles (173 km) east to west; South Australia spans 825 miles (1,328 km).
- South Australia's east-west width is 7.7 times (671%) wider than Northern Ireland's.
Highest point
- Northern Ireland's highest point is Slieve Donard at 2,789 feet (850 m); South Australia's is Mount Woodroffe at 4,708 feet (1,435 m).
- Mount Woodroffe is 1,919 feet higher than Slieve Donard.
Lowest point
- Northern Ireland's lowest point is Irish Sea at 0 feet; South Australia's is Lake Eyre at -49 feet.
- South Australia's lowest point is 49 feet lower.
Northern Ireland vs South Australia Population and History
Population
- Northern Ireland has a population of 1,905,000 (2022), while South Australia has 1,908,182 (2025).
- Northern Ireland and South Australia have about the same population.
Population density
- Northern Ireland: 363.8 people per square mile vs South Australia: 5.0.
- Northern Ireland's population density is 72.8 times higher than South Australia's.
History
- Northern Ireland: A country within the United Kingdom; created by the partition of Ireland on May 3, 1921.
- 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 20 years.
Northern Ireland vs South Australia Economy
GDP
- Northern Ireland's GDP is $58.8 billion (2022) vs South Australia's $100.2 billion.
- South Australia's economic output is 1.7 times (70%) larger than Northern Ireland's.
GDP per capita
- Northern Ireland: $30,686 per person vs South Australia: $52,511.
- South Australia's GDP per capita is 1.7 times (71%) higher than Northern Ireland's.
Official Websites
Northern Ireland official website · South Australia official website
Download the Northern Ireland vs South Australia Size Comparison Map for free
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More Size Comparisons
All Northern Ireland 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.