The map above shows New Jersey and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
New Jersey vs Western Australia Geography
Land area
- New Jersey has a land area of 7,355 square miles (19,049 km²), while Western Australia has 975,685 square miles (2,527,013 km²).
- Western Australia's land area is 132.7 times larger than New Jersey's.
Total area
- New Jersey: 8,719 square miles (22,583 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water.
- Western Australia's total area is 111.9 times larger than New Jersey's.
Length
- New Jersey is 169 miles (271 km) long from north to south; Western Australia is 1,590 miles (2,558 km).
- Western Australia's north-south length is 9.4 times (841%) longer than New Jersey's.
Width
- New Jersey spans 129 miles (207 km) east to west; Western Australia spans 1,286 miles (2,069 km).
- Western Australia's east-west width is 10.0 times (897%) wider than New Jersey's.
Highest point
- New Jersey's highest point is High Point at 1,798 feet (548 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m).
- Mount Meharry is 2,300 feet higher than High Point.
Lowest point
- New Jersey'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.
New Jersey vs Western Australia Population and History
Population
- New Jersey has a population of 9,500,851 (2024), while Western Australia has 3,061,672 (2025).
- New Jersey's population is 3.1 times (210%) larger than Western Australia's.
Population density
- New Jersey: 1,291.8 people per square mile vs Western Australia: 3.1.
- New Jersey's population density is 416.7 times higher than Western Australia's.
Largest metro area
- New Jersey's largest metropolitan area is New York-Newark-Jersey City, NY-NJ metro area (19,940,274 people) vs Western Australia's Greater Perth (2,452,765).
- New York-Newark-Jersey City, NY-NJ metro area's population is 8.1 times (713%) larger than Greater Perth's.
History
- New Jersey: Admitted to the Union on December 18, 1787, as the 3rd state.
- Western Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1829.
- In its current form, New Jersey is the older of the two by 114 years.
New Jersey vs Western Australia Economy
GDP
- New Jersey's GDP is $846.0 billion (2024) vs Western Australia's $304.6 billion.
- New Jersey's economic output is 2.8 times (178%) larger than Western Australia's.
GDP per capita
- New Jersey: $89,045 per person vs Western Australia: $99,488.
- Western Australia's GDP per capita is 1.1 times (12%) higher than New Jersey's.
Official Websites
New Jersey official website · Western Australia official website
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More Size Comparisons
All New Jersey 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.