Aurora is about 2.9 times smaller than Los Angeles.

Los Angeles (including the city proper only) is approximately 1,215 sq km, while Aurora (map shows its 53 named neighbourhoods; the area covers the whole city) is approximately 425 sq km, making Aurora 34.98% the size of Los Angeles.
Tip: This to-scale comparison of Los Angeles vs. Aurora 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.