Williamsburg is about 1.4 times bigger than Cambridge.

Cambridge is approximately 17 sq km, while Williamsburg (map shows its 52 named neighbourhoods; the area covers the whole city) is approximately 23 sq km, making Williamsburg 40% larger than Cambridge.
Tip: This to-scale comparison of Cambridge vs. Williamsburg uses the Mercator projection, which distorts the size of regions near the poles.
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