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 9 October 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)

Key differences: United States vs Australia

Want the full picture for each country? See United States and Australia, or compare their population pages: United States · Australia.

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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 15 hours 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.

How far is United States from Australia?

The distance between the geographic centres of United States and Australia is roughly 15,230 km (9,460 miles) in a straight line. Actual travel distances between cities will differ.

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