City size comparison

compared to

San Diego is about 4.5 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 San Diego is approximately 844 sq km, making San Diego 22.15% the size of Sydney.
Tip: This to-scale comparison of Sydney vs. San Diego uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: San Diego vs. Sydney

Flip Comparison · See true size
See San Diego on top of Sydney
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Cost of Living Comparison · 7 categories - 2026 data
Sydney is 12.6% cheaper than San Diego
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