City size comparison

compared to

Rockville is about 1.3 times bigger than Sydney.

Sydney is approximately 27 sq km, while Rockville (map shows its 87 named neighbourhoods; the area covers the whole city) is approximately 35 sq km, making Rockville 32% larger than Sydney.
Tip: This to-scale comparison of Sydney vs. Rockville uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Rockville vs. Sydney

Flip Comparison · See true size
See Rockville on top of Sydney
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Cost of Living Comparison · 7 categories - 2026 data
Sydney is 5.9% more expensive than Rockville
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