The map above shows Northern Ireland and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Northern Ireland vs Western Australia Geography
Land area: Northern Ireland has a land area of 5,236 square miles (13,562 km²), while Western Australia has 975,685 square miles (2,527,013 km²). Western Australia's land area is 186.3 times larger than Northern Ireland's.
Total area: Northern Ireland: 5,456 square miles (14,130 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water. Western Australia's total area is 178.8 times larger than Northern Ireland's.
Length: Northern Ireland is 83 miles (134 km) long from north to south; Western Australia is 1,590 miles (2,558 km). Western Australia's north-south length is 19.2 times longer than Northern Ireland's.
Width: Northern Ireland spans 107 miles (173 km) east to west; Western Australia spans 1,286 miles (2,069 km). Western Australia's east-west width is 12.0 times wider than Northern Ireland's.
Highest point: Northern Ireland's highest point is Slieve Donard at 2,789 feet (850 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m). Mount Meharry is 1,309 feet higher than Slieve Donard.
Lowest point: Northern Ireland's lowest point is Irish Sea at 0 feet; Western Australia's is Indian Ocean at 0 feet. Both lowest points are at or near sea level.
Northern Ireland vs Western Australia Population and History
Population: Northern Ireland has a population of 1,905,000 (2022), while Western Australia has 3,061,672 (2025). Western Australia's population is 1.6 times (61%) larger than Northern Ireland's.
Population density: Northern Ireland: 363.8 people per square mile vs Western Australia: 3.1. Northern Ireland's population density is 117.4 times higher than Western Australia's.
History: Northern Ireland: A country within the United Kingdom; created by the partition of Ireland on May 3, 1921. Western Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1829. In its current form, Western Australia is the older of the two by 20 years.
Northern Ireland vs Western Australia Economy
GDP: Northern Ireland's GDP is $58.8 billion (2022) vs Western Australia's $304.6 billion. Western Australia's economic output is 5.2 times (418%) larger than Northern Ireland's.
GDP per capita: Northern Ireland: $30,686 per person vs Western Australia: $99,488. Western Australia's GDP per capita is 3.2 times (224%) higher than Northern Ireland's.
Official Websites
Northern Ireland official website · Western Australia official website
More Size Comparisons
All Northern Ireland size comparisons · All Western 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.