Mesa is about 3 times bigger than Boston.

Boston is approximately 124 sq km, while Mesa (map shows its 6 named neighbourhoods; the area covers the whole city) is approximately 367 sq km, making Mesa 196% larger than Boston.
Tip: This to-scale comparison of Boston vs. Mesa 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.