The map above shows Arizona and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Arizona vs Western Australia Geography
Land area: Arizona has a land area of 113,655 square miles (294,366 km²), while Western Australia has 975,685 square miles (2,527,013 km²). Western Australia's land area is 8.6 times (758%) larger than Arizona's.
Total area: Arizona: 113,985 square miles (295,220 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water. Western Australia's total area is 8.6 times (756%) larger than Arizona's.
Length: Arizona is 429 miles (690 km) long from north to south; Western Australia is 1,590 miles (2,558 km). Western Australia's north-south length is 3.7 times (271%) longer than Arizona's.
Width: Arizona spans 452 miles (727 km) east to west; Western Australia spans 1,286 miles (2,069 km). Western Australia's east-west width is 2.8 times (185%) wider than Arizona's.
Highest point: Arizona's highest point is Humphreys Peak at 12,620 feet (3,847 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m). Humphreys Peak is 8,522 feet higher than Mount Meharry.
Lowest point: Arizona's lowest point is Colorado River at 71 feet; Western Australia's is Indian Ocean at 0 feet. Western Australia's lowest point is 71 feet lower.
Arizona vs Western Australia Population and History
Population: Arizona has a population of 7,582,384 (2024), while Western Australia has 3,061,672 (2025). Arizona's population is 2.5 times (148%) larger than Western Australia's.
Population density: Arizona: 66.7 people per square mile vs Western Australia: 3.1. Arizona's population density is 21.5 times higher than Western Australia's.
Largest metro area: Arizona's largest metropolitan area is Phoenix-Mesa-Chandler, AZ metro area (5,186,958 people) vs Western Australia's Greater Perth (2,452,765). Phoenix-Mesa-Chandler, AZ metro area's population is 2.1 times (111%) larger than Greater Perth's.
History: Arizona: Admitted to the Union on February 14, 1912, as the 48th state. 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 11 years.
Arizona vs Western Australia Economy
GDP: Arizona's GDP is $570.1 billion (2024) vs Western Australia's $304.6 billion. Arizona's economic output is 1.9 times (87%) larger than Western Australia's.
GDP per capita: Arizona: $75,186 per person vs Western Australia: $99,488. Western Australia's GDP per capita is 1.3 times (32%) higher than Arizona's.
Official Websites
Arizona official website · Western Australia official website
More Size Comparisons
All Arizona 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.