City size comparison

compared to

Vienna is about 12 times bigger than Rockville.

Rockville (map shows its 87 named neighbourhoods; the area covers the whole city) is approximately 35 sq km, while Vienna is approximately 415 sq km, making Vienna 1,080% larger than Rockville.
Tip: This to-scale comparison of Rockville vs. Vienna uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Vienna vs. Rockville

Flip Comparison · See true size
See Vienna on top of Rockville
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Cost of Living Comparison · 7 categories - 2026 data
Rockville is 38.5% more expensive than Vienna
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