Boston is about 5 times bigger than Williamsburg.

Williamsburg (map shows its 52 named neighbourhoods; the area covers the whole city) is approximately 23 sq km, while Boston is approximately 124 sq km, making Boston 436% larger than Williamsburg.
Tip: This to-scale comparison of Williamsburg vs. Boston uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.