City size comparison

compared to

Sydney is about 18 times bigger than Seattle.

Seattle is approximately 217 sq km, while Sydney (the 30 councils of metropolitan Sydney, without the Blue Mountains, Hawkesbury, Wollondilly and the Central Coast) is approximately 3,810 sq km, making Sydney 1,653% larger than Seattle.
Tip: This to-scale comparison of Seattle vs. Sydney uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Sydney vs. Seattle

Flip Comparison · See true size
See Sydney on top of Seattle
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Cost of Living Comparison · 7 categories - 2026 data
Seattle is 12.6% more expensive than Sydney
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