Sydney is about 2.7 times smaller than Bellingham.

Bellingham (map shows its 21 named neighbourhoods; the area covers the whole city) is approximately 73 sq km, while Sydney is approximately 27 sq km, making Sydney 36.56% the size of Bellingham.
Tip: This to-scale comparison of Bellingham 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.