The map above shows Missouri and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Missouri vs Western Australia Geography
Land area
- Missouri has a land area of 68,746 square miles (178,052 km²), while Western Australia has 975,685 square miles (2,527,013 km²).
- Western Australia's land area is 14.2 times larger than Missouri's.
Total area
- Missouri: 69,707 square miles (180,540 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water.
- Western Australia's total area is 14.0 times larger than Missouri's.
Length
- Missouri is 328 miles (529 km) long from north to south; Western Australia is 1,590 miles (2,558 km).
- Western Australia's north-south length is 4.8 times (385%) longer than Missouri's.
Width
- Missouri spans 437 miles (703 km) east to west; Western Australia spans 1,286 miles (2,069 km).
- Western Australia's east-west width is 2.9 times (194%) wider than Missouri's.
Highest point
- Missouri's highest point is Taum Sauk Mountain at 1,771 feet (540 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m).
- Mount Meharry is 2,327 feet higher than Taum Sauk Mountain.
Lowest point
- Missouri's lowest point is St. Francis River at 230 feet; Western Australia's is Indian Ocean at 0 feet.
- Western Australia's lowest point is 230 feet lower.
Missouri vs Western Australia Population and History
Population
- Missouri has a population of 6,245,466 (2024), while Western Australia has 3,061,672 (2025).
- Missouri's population is 2.0 times (104%) larger than Western Australia's.
Population density
- Missouri: 90.8 people per square mile vs Western Australia: 3.1.
- Missouri's population density is 29.3 times higher than Western Australia's.
Largest metro area
- Missouri's largest metropolitan area is St. Louis, MO-IL metro area (2,811,927 people) vs Western Australia's Greater Perth (2,452,765).
- St. Louis, MO-IL metro area's population is 1.1 times (15%) larger than Greater Perth's.
History
- Missouri: Admitted to the Union on August 10, 1821, as the 24th state.
- Western Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1829.
- In its current form, Missouri is the older of the two by 80 years.
Missouri vs Western Australia Economy
GDP
- Missouri's GDP is $448.7 billion (2024) vs Western Australia's $304.6 billion.
- Missouri's economic output is 1.5 times (47%) larger than Western Australia's.
GDP per capita
- Missouri: $71,846 per person vs Western Australia: $99,488.
- Western Australia's GDP per capita is 1.4 times (38%) higher than Missouri's.
Official Websites
Missouri official website · Western Australia official website
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More Size Comparisons
All Missouri 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.