Albuquerque is about 18 times bigger than Sydney.

Sydney is approximately 27 sq km, while Albuquerque (map shows its 231 named neighbourhoods; the area covers the whole city) is approximately 485 sq km, making Albuquerque 1,717% larger than Sydney.
Tip: This to-scale comparison of Sydney vs. Albuquerque 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.