• Lifestyle
  • January 8, 2026

Australia vs USA Size Comparison: Land Area & Density Facts

You know what's funny? Last year I was planning a road trip through Western Australia and casually assumed it would take maybe a week. Big mistake. After mapping it out properly, I realized you could fit the entire UK into that state alone. That got me digging into how big Australia really is compared to America, and wow, there are some surprises.

Let's Get the Numbers Straight

First things first – we need to talk about land area. When folks ask "how big is Australia compared to America?", they're usually thinking about the contiguous US states (you know, those tightly packed ones). But honestly, to do this right, we need to look at all territories.

Country Total Area (sq km) Land Area (sq km) Water Area (sq km) Global Rank
Australia 7,741,220 7,682,300 58,920 6th largest
United States (all territories) 9,833,517 9,147,593 685,924 3rd largest
Contiguous United States 8,080,464 7,663,941 416,523 -

See that? When you consider how big Australia is compared to America's contiguous states, it's shockingly close. Australia's land area is actually about 18,000 sq km larger than the mainland US. Mind-blowing, right?

But here's the kicker I discovered when comparing distances:

  • Driving Perth to Sydney: 4,000 km (like New York to Los Angeles!)
  • Melbourne to Darwin: 3,750 km (Chicago to San Francisco equivalent)
  • The Nullarbor Plain crossing: 1,200 km of dead-straight road (try that without podcasts)

Why Does America Feel Bigger?

Okay, so if Australia's size versus America is so similar in pure land mass, why does the US seem enormous? Three big reasons:

Population Density Reality Check

Let's talk people. I remember landing in Sydney thinking "Where is everyone?" outside downtown. Then saw the stats:

Region Population Population Density (per sq km) Notes
Australia 26 million 3.4 90% live within 50km of coast
United States 332 million 36.2 Spread more evenly nationwide
Texas (for scale) 29 million 42 More people than entire Australia!

That density difference hits you when driving. Outside Australian coastal cities? Hours of wilderness. Kansas might feel remote, but you'll still find diners every hour.

Geographical Spread Differences

Australia's practical size is tricky. Ever heard the saying "Australia has the geography but not the infrastructure"? There's truth there:

  • Agricultural Land: US has 44% usable farmland vs Australia's 53% (but Australia's soil quality is poorer overall)
  • Mountain Ranges: The Rockies divide east/west US, while Australia's Great Dividing Range runs close to the east coast
  • Deserts: 35% of Australia is desert vs 30% in southwestern US
Funny story: My American friend visited and insisted we drive from Uluru to Perth. "It looks close on the map!" he said. I had to break it to him – that's a brutal 2,200 km trip through deserts with gas stations few and far between.

Size Perception Tricks on Maps

Here's something that bugs me: Mercator projection lies. Seriously. It makes Canada and Russia look gigantic while shrinking near-equator countries. That's why comparing Australia to US size feels off visually.

Try this: Grab an orange and draw continents. Now flatten the peel. See how things stretch? That's why Greenland looks bigger than Africa on maps (it's actually 14 times smaller!). Wild, huh?

Time Zones Matter Too

People overlook this when considering how big Australia is compared to America:

Country Number of Time Zones Coast-to-Coast Travel Time
Australia 3 mainland zones Sydney-Perth flight: 5 hours
United States 4 contiguous zones NY-LA flight: 6 hours

Nearly identical flight times? That should tell you something about their comparable scales when evaluating the size of Australia versus the USA.

Why This Matters for Real Life

Beyond trivia, understanding Australia's size compared to America has practical uses:

For Travel Planning

  • Underestimating Australian distances is the top tourist mistake. Driving from Cairns to Brisbane? That's 1,700km – same as Chicago to Denver!
  • US interstate highways average 110km/h vs Australia's 100-110km/h outside cities
  • Fuel costs: Australia averages $1.70/liter vs US $0.90/liter (2023 data)

For Business & Shipping

Shipping goods across Australia costs more than shipping the same distance in America. Why? Fewer distribution hubs. A pallet from Melbourne to Perth:

  • Costs approx $1,200 AUD vs $800 USD for Chicago-LA
  • Takes 7 days vs 4 days

That infrastructure gap affects pricing nationwide.

For Immigration Decisions

Considering a move? Remember:

  • Australia feels more "empty" – 86% urbanized vs US 83%, but cities are concentrated
  • Rural internet speeds: Many Australian farms get 25Mbps max while rural US averages 50Mbps
  • Weather extremes differ: Australia has wider temperature swings interior vs coast

Common Questions Answered

Could Australia fit inside America?

Absolutely. If you dropped Australia over the mainland US, it would stretch from California to Georgia with room to spare. But Alaska? That alone is 1.7 million sq km vs Australia's 7.7 million.

Is Western Australia bigger than Texas?

Oh yeah. WA is 2.5 million sq km vs Texas at 700,000 sq km. WA is over three times larger!

Why does Australia look smaller on many maps?

Mercator projection distortion strikes again! Being closer to equator makes it appear smaller than high-latitude places like Canada.

How do populations compare state-by-state?

Australian State Size Comparable to US State Population Density Contrast
New South Wales Texas + Louisiana combined NSW: 10 people/sq km vs Texas: 42
Queensland Alaska + Montana QLD: 3 people/sq km vs Montana: 4
Tasmania West Virginia Similar populations but Tasmania more isolated

Key Takeaways on the Australia-America Size Question

Wrapping this up, here's what really matters when you're trying to understand how big Australia is compared to America:

  • Land area is nearly identical between mainland USA and Australia (with Australia slightly larger)
  • The continental US feels bigger due to population distribution and infrastructure
  • Travel times between coasts are surprisingly similar in both nations
  • Practical inhabitable land differs significantly due to water access and soil quality
  • Map distortions create persistent misconceptions about their relative sizes

Last thought? My cousin from Ohio visited and asked why we don't have more interstate highways. I pointed out we'd need to pave 20,000km of roads through deserts for maybe 10,000 daily users. His response? "Okay, now I get why you guys fly everywhere." Exactly.

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