Phoenix is about 4.3 times bigger than Little Rock.

Little Rock (map shows its 28 named neighbourhoods; the area covers the whole city) is approximately 314 sq km, while Phoenix is approximately 1,342 sq km, making Phoenix 327% larger than Little Rock.
Tip: This to-scale comparison of Little Rock vs. Phoenix 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.