Boston is about 1.9 times bigger than Syracuse.

Syracuse is approximately 65 sq km, while Boston is approximately 124 sq km, making Boston 91% larger than Syracuse.
Tip: This to-scale comparison of Syracuse 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.