The map above shows Mississippi and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Mississippi vs Western Australia Geography
Land area: Mississippi has a land area of 46,925 square miles (121,534 km²), while Western Australia has 975,685 square miles (2,527,013 km²). Western Australia's land area is 20.8 times larger than Mississippi's.
Total area: Mississippi: 48,436 square miles (125,448 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water. Western Australia's total area is 20.1 times larger than Mississippi's.
Length: Mississippi is 337 miles (542 km) long from north to south; Western Australia is 1,590 miles (2,558 km). Western Australia's north-south length is 4.7 times (372%) longer than Mississippi's.
Width: Mississippi spans 340 miles (547 km) east to west; Western Australia spans 1,286 miles (2,069 km). Western Australia's east-west width is 3.8 times (278%) wider than Mississippi's.
Highest point: Mississippi's highest point is Woodall Mountain at 805 feet (245 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m). Mount Meharry is 3,293 feet higher than Woodall Mountain.
Lowest point: Mississippi's lowest point is Gulf of Mexico at 0 feet; Western Australia's is Indian Ocean at 0 feet. Both lowest points are at or near sea level.
Mississippi vs Western Australia Population and History
Population: Mississippi has a population of 2,943,045 (2024), while Western Australia has 3,061,672 (2025). Mississippi and Western Australia have about the same population.
Population density: Mississippi: 62.7 people per square mile vs Western Australia: 3.1. Mississippi's population density is 20.2 times higher than Western Australia's.
Largest metro area: Mississippi's largest metropolitan area is Memphis, TN-MS-AR metro area (1,339,345 people) vs Western Australia's Greater Perth (2,452,765). Greater Perth's population is 1.8 times (83%) larger than Memphis, TN-MS-AR metro area's.
History: Mississippi: Admitted to the Union on December 10, 1817, as the 20th state. Western Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1829. In its current form, Mississippi is the older of the two by 84 years.
Mississippi vs Western Australia Economy
GDP: Mississippi's GDP is $158.2 billion (2024) vs Western Australia's $304.6 billion. Western Australia's economic output is 1.9 times (93%) larger than Mississippi's.
GDP per capita: Mississippi: $53,751 per person vs Western Australia: $99,488. Western Australia's GDP per capita is 1.9 times (85%) higher than Mississippi's.
Official Websites
Mississippi official website · Western Australia official website
More Size Comparisons
All Mississippi 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.