Sydney is about 3 times smaller than Glendale.

Glendale is approximately 79 sq km, while Sydney is approximately 27 sq km, making Sydney 33.82% the size of Glendale.
Tip: This to-scale comparison of Glendale 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.