The map above shows Colorado and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Colorado vs Western Australia Geography
Land area: Colorado has a land area of 103,637 square miles (268,419 km²), while Western Australia has 975,685 square miles (2,527,013 km²). Western Australia's land area is 9.4 times (841%) larger than Colorado's.
Total area: Colorado: 104,095 square miles (269,605 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water. Western Australia's total area is 9.4 times (837%) larger than Colorado's.
Length: Colorado is 467 miles (751 km) long from north to south; Western Australia is 1,590 miles (2,558 km). Western Australia's north-south length is 3.4 times (240%) longer than Colorado's.
Width: Colorado spans 387 miles (622 km) east to west; Western Australia spans 1,286 miles (2,069 km). Western Australia's east-west width is 3.3 times (232%) wider than Colorado's.
Highest point: Colorado's highest point is Mount Elbert at 14,422 feet (4,396 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m). Mount Elbert is 10,324 feet higher than Mount Meharry.
Lowest point: Colorado's lowest point is Arikaree River at 3,326 feet; Western Australia's is Indian Ocean at 0 feet. Western Australia's lowest point is 3,326 feet lower.
Colorado vs Western Australia Population and History
Population: Colorado has a population of 5,957,493 (2024), while Western Australia has 3,061,672 (2025). Colorado's population is 1.9 times (95%) larger than Western Australia's.
Population density: Colorado: 57.5 people per square mile vs Western Australia: 3.1. Colorado's population density is 18.5 times higher than Western Australia's.
Largest metro area: Colorado's largest metropolitan area is Denver-Aurora-Centennial, CO metro area (3,052,498 people) vs Western Australia's Greater Perth (2,452,765). Denver-Aurora-Centennial, CO metro area's population is 1.2 times (24%) larger than Greater Perth's.
History: Colorado: Admitted to the Union on August 1, 1876, as the 38th state. Western Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1829. In its current form, Colorado is the older of the two by 25 years.
Colorado vs Western Australia Economy
GDP: Colorado's GDP is $557.6 billion (2024) vs Western Australia's $304.6 billion. Colorado's economic output is 1.8 times (83%) larger than Western Australia's.
GDP per capita: Colorado: $93,602 per person vs Western Australia: $99,488. Western Australia's GDP per capita is 1.1 times (6%) higher than Colorado's.
Official Websites
Colorado official website · Western Australia official website
More Size Comparisons
All Colorado 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.