The map above shows United States and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
United States vs Western Australia Geography
Land area: United States has a land area of 3,533,467 square miles (9,151,637 km²), while Western Australia has 975,685 square miles (2,527,013 km²). United States' land area is 3.6 times (262%) larger than Western Australia's.
Total area: United States: 3,802,784 square miles (9,849,165 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water. United States' total area is 3.9 times (290%) larger than Western Australia's.
Length: United States is 3,628 miles (5,839 km) long from north to south; Western Australia is 1,590 miles (2,558 km). United States' north-south length is 2.3 times (128%) longer than Western Australia's.
Width: United States spans 4,824 miles (7,763 km) east to west; Western Australia spans 1,286 miles (2,069 km). United States' east-west width is 3.8 times (275%) wider than Western Australia's.
Highest point: United States's highest point is Denali at 20,308 feet (6,190 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m). Denali is 16,210 feet higher than Mount Meharry.
Lowest point: United States's lowest point is Death Valley at -279 feet; Western Australia's is Indian Ocean at 0 feet. United States's lowest point is 279 feet lower.
United States vs Western Australia Population and History
Population: United States has a population of 340,110,988 (2024), while Western Australia has 3,061,672 (2025). United States' population is 111.1 times larger than Western Australia's.
Population density: United States: 96.3 people per square mile vs Western Australia: 3.1. United States' population density is 31.1 times higher than Western Australia's.
Largest metro area: United States's largest metropolitan area is New York-Newark-Jersey City, NY-NJ metro area (19,940,274 people) vs Western Australia's Greater Perth (2,452,765). New York-Newark-Jersey City, NY-NJ metro area's population is 8.1 times (713%) larger than Greater Perth's.
History: United States: Declared independence on July 4, 1776. Western Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1829. In its current form, United States is the older of the two by 125 years.
United States vs Western Australia Economy
GDP: United States's GDP is $30,769.7 billion (2025) vs Western Australia's $304.6 billion. United States' economic output is 101.0 times larger than Western Australia's.
GDP per capita: United States: $89,599 per person vs Western Australia: $99,488. Western Australia's GDP per capita is 1.1 times (11%) higher than United States'.
Official Websites
United States official website · Western Australia official website
More Size Comparisons
All United States 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.