City size comparison

compared to

Sydney is about 1.3 times smaller than Rockville.

Rockville (map shows its 87 named neighbourhoods; the area covers the whole city) is approximately 35 sq km, while Sydney is approximately 27 sq km, making Sydney 75.99% the size of Rockville.
Tip: This to-scale comparison of Rockville vs. Sydney uses the Mercator projection, which distorts the size of regions near the poles.
Share

Compare further: Sydney vs. Rockville

Flip Comparison · See true size
See Sydney on top of Rockville
→
Cost of Living Comparison · 7 categories - 2026 data
Rockville is 7.2% more expensive than Sydney
→
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.
Download on the App Store GET IT ON Google Play