Pasadena is about 28 times smaller than Houston.

Houston is approximately 1,659 sq km, while Pasadena is approximately 59 sq km, making Pasadena 3.59% the size of Houston.
Tip: This to-scale comparison of Houston vs. Pasadena 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.