City size comparison

compared to

Sydney is about 2 times bigger than Key West.

Key West (area of Key West island) is approximately 14 sq km, while Sydney is approximately 27 sq km, making Sydney 96% larger than Key West.
Tip: This to-scale comparison of Key West vs. Sydney uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Sydney vs. Key West

Flip Comparison · See true size
See Sydney on top of Key West
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Cost of Living Comparison · 7 categories - 2026 data
Key West is 7.0% more expensive than Sydney
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