The map above shows Pennsylvania and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Pennsylvania vs Western Australia Geography
Land area
- Pennsylvania has a land area of 44,742 square miles (115,882 km²), while Western Australia has 975,685 square miles (2,527,013 km²).
- Western Australia's land area is 21.8 times larger than Pennsylvania's.
Total area
- Pennsylvania: 46,054 square miles (119,279 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water.
- Western Australia's total area is 21.2 times larger than Pennsylvania's.
Length
- Pennsylvania is 284 miles (458 km) long from north to south; Western Australia is 1,590 miles (2,558 km).
- Western Australia's north-south length is 5.6 times (460%) longer than Pennsylvania's.
Width
- Pennsylvania spans 307 miles (495 km) east to west; Western Australia spans 1,286 miles (2,069 km).
- Western Australia's east-west width is 4.2 times (319%) wider than Pennsylvania's.
Highest point
- Pennsylvania's highest point is Mount Davis at 3,210 feet (978 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m).
- Mount Meharry is 888 feet higher than Mount Davis.
Lowest point
- Pennsylvania's lowest point is Delaware River at 0 feet; Western Australia's is Indian Ocean at 0 feet.
- Both lowest points are at or near sea level.
Pennsylvania vs Western Australia Population and History
Population
- Pennsylvania has a population of 13,078,751 (2024), while Western Australia has 3,061,672 (2025).
- Pennsylvania's population is 4.3 times (327%) larger than Western Australia's.
Population density
- Pennsylvania: 292.3 people per square mile vs Western Australia: 3.1.
- Pennsylvania's population density is 94.3 times higher than Western Australia's.
Largest metro area
- Pennsylvania's largest metropolitan area is Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area (6,330,422 people) vs Western Australia's Greater Perth (2,452,765).
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area's population is 2.6 times (158%) larger than Greater Perth's.
History
- Pennsylvania: Admitted to the Union on December 12, 1787, as the 2nd state.
- Western Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1829.
- In its current form, Pennsylvania is the older of the two by 114 years.
Pennsylvania vs Western Australia Economy
GDP
- Pennsylvania's GDP is $1,007.9 billion (2024) vs Western Australia's $304.6 billion.
- Pennsylvania's economic output is 3.3 times (231%) larger than Western Australia's.
GDP per capita
- Pennsylvania: $77,062 per person vs Western Australia: $99,488.
- Western Australia's GDP per capita is 1.3 times (29%) higher than Pennsylvania's.
Official Websites
Pennsylvania official website · Western Australia official website
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More Size Comparisons
All Pennsylvania 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.