Sydney is about 2.4 times smaller than Syracuse.

Syracuse is approximately 65 sq km, while Sydney is approximately 27 sq km, making Sydney 41.14% the size of Syracuse.
Tip: This to-scale comparison of Syracuse vs. Sydney 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.