The map above shows Northern Territory and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Northern Territory vs Western Australia Geography
Land area: Northern Territory has a land area of 520,902 square miles (1,349,129 km²), while Western Australia has 975,685 square miles (2,527,013 km²). Western Australia's land area is 1.9 times (87%) larger than Northern Territory's.
Total area: Northern Territory: 520,902 square miles (1,349,129 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water. Western Australia's total area is 1.9 times (87%) larger than Northern Territory's.
Length: Northern Territory is 1,092 miles (1,758 km) long from north to south; Western Australia is 1,590 miles (2,558 km). Western Australia's north-south length is 1.5 times (46%) longer than Northern Territory's.
Width: Northern Territory spans 610 miles (981 km) east to west; Western Australia spans 1,286 miles (2,069 km). Western Australia's east-west width is 2.1 times (111%) wider than Northern Territory's.
Highest point: Northern Territory's highest point is Mount Zeil at 5,023 feet (1,531 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m). Mount Zeil is 925 feet higher than Mount Meharry.
Lowest point: Northern Territory's lowest point is Timor Sea at 0 feet; Western Australia's is Indian Ocean at 0 feet. Both lowest points are at or near sea level.
Northern Territory vs Western Australia Population and History
Population: Northern Territory has a population of 265,457 (2025), while Western Australia has 3,061,672 (2025). Western Australia's population is 11.5 times larger than Northern Territory's.
Population density: Northern Territory: 0.5 people per square mile vs Western Australia: 3.1. Western Australia's population density is 6.2 times (520%) higher than Northern Territory's.
Largest metro area: Northern Territory's largest metropolitan area is Greater Darwin (159,284 people) vs Western Australia's Greater Perth (2,452,765). Greater Perth's population is 15.4 times larger than Greater Darwin's.
History: Northern Territory: Became a federal territory on January 1, 1911; self-governing since 1978. 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 10 years.
Northern Territory vs Western Australia Economy
GDP: Northern Territory's GDP is $22.4 billion (2025) vs Western Australia's $304.6 billion. Western Australia's economic output is 13.6 times larger than Northern Territory's.
GDP per capita: Northern Territory: $84,383 per person vs Western Australia: $99,488. Western Australia's GDP per capita is 1.2 times (18%) higher than Northern Territory's.
Official Websites
Northern Territory official website · Western Australia official website
More Size Comparisons
All Northern Territory 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.