The map above shows New South Wales and Northern Ireland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
New South Wales vs Northern Ireland Geography
Land area: New South Wales has a land area of 309,130 square miles (800,642 km²), while Northern Ireland has 5,236 square miles (13,562 km²). New South Wales' land area is 59.0 times larger than Northern Ireland's.
Total area: New South Wales: 309,130 square miles (800,642 km²) vs Northern Ireland: 5,456 square miles (14,130 km²), including inland and coastal water. New South Wales' total area is 56.7 times larger than Northern Ireland's.
Length: New South Wales is 678 miles (1,092 km) long from north to south; Northern Ireland is 83 miles (134 km). New South Wales' north-south length is 8.2 times (717%) longer than Northern Ireland's.
Width: New South Wales spans 831 miles (1,338 km) east to west; Northern Ireland spans 107 miles (173 km). New South Wales' east-west width is 7.8 times (677%) wider than Northern Ireland's.
Highest point: New South Wales's highest point is Mount Kosciuszko at 7,310 feet (2,228 m); Northern Ireland's is Slieve Donard at 2,789 feet (850 m). Mount Kosciuszko is 4,521 feet higher than Slieve Donard.
Lowest point: New South Wales's lowest point is Pacific Ocean at 0 feet; Northern Ireland's is Irish Sea at 0 feet. Both lowest points are at or near sea level.
New South Wales vs Northern Ireland Population and History
Population: New South Wales has a population of 8,624,534 (2025), while Northern Ireland has 1,905,000 (2022). New South Wales' population is 4.5 times (353%) larger than Northern Ireland's.
Population density: New South Wales: 27.9 people per square mile vs Northern Ireland: 363.8. Northern Ireland's population density is 13.0 times higher than New South Wales'.
History: New South Wales: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1788. Northern Ireland: A country within the United Kingdom; created by the partition of Ireland on May 3, 1921. In its current form, New South Wales is the older of the two by 20 years.
New South Wales vs Northern Ireland Economy
GDP: New South Wales's GDP is $547.1 billion (2025) vs Northern Ireland's $58.8 billion. New South Wales' economic output is 9.3 times (830%) larger than Northern Ireland's.
GDP per capita: New South Wales: $63,435 per person vs Northern Ireland: $30,686. New South Wales' GDP per capita is 2.1 times (107%) higher than Northern Ireland's.
Official Websites
New South Wales official website · Northern Ireland official website
More Size Comparisons
All New South Wales size comparisons · All Northern Ireland 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.