City size comparison

compared to

Rockville is about 4.5 times smaller than Washington.

Washington is approximately 158 sq km, while Rockville (map shows its 87 named neighbourhoods; the area covers the whole city) is approximately 35 sq km, making Rockville 22.19% the size of Washington.
Tip: This to-scale comparison of Washington vs. Rockville uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Rockville vs. Washington

Flip Comparison · See true size
See Rockville on top of Washington
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Cost of Living Comparison · 7 categories - 2026 data
Washington is 18.5% more expensive than Rockville
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