The map above shows New South Wales and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
New South Wales vs Western Australia Geography
Land area: New South Wales has a land area of 309,130 square miles (800,642 km²), while Western Australia has 975,685 square miles (2,527,013 km²). Western Australia's land area is 3.2 times (216%) larger than New South Wales'.
Total area: New South Wales: 309,130 square miles (800,642 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water. Western Australia's total area is 3.2 times (216%) larger than New South Wales'.
Length: New South Wales is 678 miles (1,092 km) long from north to south; Western Australia is 1,590 miles (2,558 km). Western Australia's north-south length is 2.3 times (135%) longer than New South Wales'.
Width: New South Wales spans 831 miles (1,338 km) east to west; Western Australia spans 1,286 miles (2,069 km). Western Australia's east-west width is 1.5 times (55%) wider than New South Wales'.
Highest point: New South Wales's highest point is Mount Kosciuszko at 7,310 feet (2,228 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m). Mount Kosciuszko is 3,212 feet higher than Mount Meharry.
Lowest point: New South Wales's lowest point is Pacific Ocean at 0 feet; Western Australia's is Indian Ocean at 0 feet. Both lowest points are at or near sea level.
New South Wales vs Western Australia Population and History
Population: New South Wales has a population of 8,624,534 (2025), while Western Australia has 3,061,672 (2025). New South Wales' population is 2.8 times (182%) larger than Western Australia's.
Population density: New South Wales: 27.9 people per square mile vs Western Australia: 3.1. New South Wales' population density is 9.0 times (800%) higher than Western Australia's.
Largest metro area: New South Wales's largest metropolitan area is Greater Sydney (5,638,830 people) vs Western Australia's Greater Perth (2,452,765). Greater Sydney's population is 2.3 times (130%) larger than Greater Perth's.
History: New South Wales: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1788. Western Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1829.
New South Wales vs Western Australia Economy
GDP: New South Wales's GDP is $547.1 billion (2025) vs Western Australia's $304.6 billion. New South Wales' economic output is 1.8 times (80%) larger than Western Australia's.
GDP per capita: New South Wales: $63,435 per person vs Western Australia: $99,488. Western Australia's GDP per capita is 1.6 times (57%) higher than New South Wales'.
Official Websites
New South Wales official website · Western Australia official website
More Size Comparisons
All New South Wales 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.