The map above shows Guam and Western Australia side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Guam vs Western Australia Geography
Land area
- Guam has a land area of 210 square miles (544 km²), while Western Australia has 975,685 square miles (2,527,013 km²).
- Western Australia's land area is 4,645.2 times larger than Guam's.
Total area
- Guam: 210 square miles (544 km²) vs Western Australia: 975,685 square miles (2,527,013 km²), including inland and coastal water.
- Western Australia's total area is 4,645.2 times larger than Guam's.
Length
- Guam is 27 miles (43 km) long from north to south; Western Australia is 1,590 miles (2,558 km).
- Western Australia's north-south length is 58.9 times longer than Guam's.
Width
- Guam spans 22 miles (35 km) east to west; Western Australia spans 1,286 miles (2,069 km).
- Western Australia's east-west width is 58.5 times wider than Guam's.
Highest point
- Guam's highest point is Mount Lamlam at 1,332 feet (406 m); Western Australia's is Mount Meharry at 4,098 feet (1,249 m).
- Mount Meharry is 2,766 feet higher than Mount Lamlam.
Lowest point
- Guam's lowest point is Pacific Ocean at 0 feet; Western Australia's is Indian Ocean at 0 feet.
- Both lowest points are at or near sea level.
Guam vs Western Australia Population and History
Population
- Guam has a population of 153,836 (2020), while Western Australia has 3,061,672 (2025).
- Western Australia's population is 19.9 times larger than Guam's.
Population density
- Guam: 732.6 people per square mile vs Western Australia: 3.1.
- Guam's population density is 236.3 times higher than Western Australia's.
History
- Guam: A US territory since 1898.
- Western Australia: Became an Australian state at Federation on January 1, 1901; founded as a colony in 1829.
- In its current form, Guam is the older of the two by 3 years.
Official Websites
Guam official website · Western Australia official website
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More Size Comparisons
All Guam 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.