The map above shows Massachusetts and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Massachusetts vs Western Australia Geography
Land area: Massachusetts has a land area of 7,801 square miles (20,204 km²), while Western Australia has 975,685 square miles (2,527,013 km²). Western Australia's land area is 125.1 times larger than Massachusetts'.
Total area: Massachusetts: 10,554 square miles (27,335 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water. Western Australia's total area is 92.4 times larger than Massachusetts'.
Length: Massachusetts is 123 miles (198 km) long from north to south; Western Australia is 1,590 miles (2,558 km). Western Australia's north-south length is 12.9 times longer than Massachusetts'.
Width: Massachusetts spans 185 miles (297 km) east to west; Western Australia spans 1,286 miles (2,069 km). Western Australia's east-west width is 7.0 times (595%) wider than Massachusetts'.
Highest point: Massachusetts's highest point is Mount Greylock at 3,489 feet (1,063 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m). Mount Meharry is 609 feet higher than Mount Greylock.
Lowest point: Massachusetts's lowest point is Atlantic Ocean at 0 feet; Western Australia's is Indian Ocean at 0 feet. Both lowest points are at or near sea level.
Massachusetts vs Western Australia Population and History
Population: Massachusetts has a population of 7,136,171 (2024), while Western Australia has 3,061,672 (2025). Massachusetts' population is 2.3 times (133%) larger than Western Australia's.
Population density: Massachusetts: 914.8 people per square mile vs Western Australia: 3.1. Massachusetts' population density is 295.1 times higher than Western Australia's.
Largest metro area: Massachusetts's largest metropolitan area is Boston-Cambridge-Newton, MA-NH metro area (5,025,517 people) vs Western Australia's Greater Perth (2,452,765). Boston-Cambridge-Newton, MA-NH metro area's population is 2.0 times (105%) larger than Greater Perth's.
History: Massachusetts: Admitted to the Union on February 6, 1788, as the 6th state. Western Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1829. In its current form, Massachusetts is the older of the two by 113 years.
Massachusetts vs Western Australia Economy
GDP: Massachusetts's GDP is $778.5 billion (2024) vs Western Australia's $304.6 billion. Massachusetts' economic output is 2.6 times (156%) larger than Western Australia's.
GDP per capita: Massachusetts: $109,095 per person vs Western Australia: $99,488. Massachusetts' GDP per capita is 1.1 times (10%) higher than Western Australia's.
Official Websites
Massachusetts official website · Western Australia official website
More Size Comparisons
All Massachusetts 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.