City size comparison

compared to

Boston is about 31 times smaller than Sydney.

Sydney (the 30 councils of metropolitan Sydney, without the Blue Mountains, Hawkesbury, Wollondilly and the Central Coast) is approximately 3,810 sq km, while Boston is approximately 124 sq km, making Boston 3.25% the size of Sydney.
Tip: This to-scale comparison of Sydney vs. Boston uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Boston vs. Sydney

Flip Comparison · See true size
See Boston on top of Sydney
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Cost of Living Comparison · 7 categories - 2026 data
Sydney is 16.4% cheaper than Boston
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