United States vs Australia — Country Comparison

The flag of the United States of America is composed of thirteen equal horizontal bands of red alternating with white. A blue rectangle, bearing fifty small five-pointed white stars arranged in nine rows where rows of six stars alternate with rows of five stars, is superimposed in the canton.United States VS The flag of Australia has a dark blue field. It features the flag of the United Kingdom — the Union Jack — in the canton, beneath which is a large white seven-pointed star. A representation of the Southern Cross constellation, made up of one small five-pointed and four larger seven-pointed white stars, is situated on the fly side of the field.Australia

United States and Australia side by side: United States is the larger country (9,525,067 km² vs 7,692,024 km²), while United States has the bigger population (340.1 million vs 27.5 million). The full comparison table below covers capitals, currencies, languages, dialling codes, timezones and more.

Facts last checked 31 August 2026.

FactUnited StatesAustralia
CapitalWashington, D.C.Canberra
Population340,110,98827,536,874
Area9,525,067 km²7,692,024 km²
CurrencyUnited States dollarAustralian dollar
LanguageEnglishEnglish
Dialling code+1+61
Main timezoneUTC-05:00UTC+10:00
Drives on theRightLeft
RegionNorth AmericaAustralia and New Zealand
Emergency number911000 (or 112 from mobiles)

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United States vs Australia — FAQ

Which is bigger, United States or Australia?

United States is bigger by area: 9,525,067 km² vs 7,692,024 km².

Is United States bigger than Australia?

Yes — United States covers 9,525,067 km², compared to 7,692,024 km² for Australia.

Which has more people, United States or Australia?

United States has the larger population: 340,110,988 (340.1 million) vs 27,536,874 (27.5 million).

How does the size of United States compare to Australia?

United States (9,525,067 km²) is larger than Australia (7,692,024 km²).

Do United States and Australia use the same currency?

No — United States uses the United States dollar and Australia uses the Australian dollar.

Are United States and Australia on the same continent?

No — United States is in North America and Australia is in Oceania.

What is the time difference between United States and Australia?

Australia is 15h ahead of United States (UTC-05:00 vs UTC+10:00), not accounting for daylight saving changes.

Do United States and Australia share an official language?

Yes — both share English as an official language.

Do United States and Australia share a border?

No — United States and Australia do not share a land border.

Which is more densely populated, United States or Australia?

United States is more densely populated at roughly 36 people per km², compared to 4 for Australia.

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