Boston is about 3.1 times smaller than Bakersfield.

Bakersfield (map shows its 44 named neighbourhoods; the area covers the whole city) is approximately 389 sq km, while Boston is approximately 124 sq km, making Boston 31.86% the size of Bakersfield.
Tip: This to-scale comparison of Bakersfield 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.