The map above shows Oklahoma and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Oklahoma vs Western Australia Geography
Land area: Oklahoma has a land area of 68,597 square miles (177,665 km²), while Western Australia has 975,685 square miles (2,527,013 km²). Western Australia's land area is 14.2 times larger than Oklahoma's.
Total area: Oklahoma: 69,899 square miles (181,038 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 Oklahoma's.
Length: Oklahoma is 533 miles (857 km) long from north to south; Western Australia is 1,590 miles (2,558 km). Western Australia's north-south length is 3.0 times (198%) longer than Oklahoma's.
Width: Oklahoma spans 490 miles (789 km) east to west; Western Australia spans 1,286 miles (2,069 km). Western Australia's east-west width is 2.6 times (162%) wider than Oklahoma's.
Highest point: Oklahoma's highest point is Black Mesa at 4,980 feet (1,518 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m). Black Mesa is 882 feet higher than Mount Meharry.
Lowest point: Oklahoma's lowest point is Little River at 289 feet; Western Australia's is Indian Ocean at 0 feet. Western Australia's lowest point is 289 feet lower.
Oklahoma vs Western Australia Population and History
Population: Oklahoma has a population of 4,095,393 (2024), while Western Australia has 3,061,672 (2025). Oklahoma's population is 1.3 times (34%) larger than Western Australia's.
Population density: Oklahoma: 59.7 people per square mile vs Western Australia: 3.1. Oklahoma's population density is 19.3 times higher than Western Australia's.
Largest metro area: Oklahoma's largest metropolitan area is Oklahoma City, OK metro area (1,497,821 people) vs Western Australia's Greater Perth (2,452,765). Greater Perth's population is 1.6 times (64%) larger than Oklahoma City, OK metro area's.
History: Oklahoma: Admitted to the Union on November 16, 1907, as the 46th 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 6 years.
Oklahoma vs Western Australia Economy
GDP: Oklahoma's GDP is $263.7 billion (2024) vs Western Australia's $304.6 billion. Western Australia's economic output is 1.2 times (16%) larger than Oklahoma's.
GDP per capita: Oklahoma: $64,388 per person vs Western Australia: $99,488. Western Australia's GDP per capita is 1.5 times (55%) higher than Oklahoma's.
Official Websites
Oklahoma official website · Western Australia official website
More Size Comparisons
All Oklahoma 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.