Boston is about 2.4 times bigger than Beaverton.

Beaverton (map shows its 13 named neighbourhoods; the area covers the whole city) is approximately 51 sq km, while Boston is approximately 124 sq km, making Boston 143% larger than Beaverton.
Tip: This to-scale comparison of Beaverton 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.