El Paso is about 2.5 times smaller than Houston.

Houston is approximately 1,659 sq km, while El Paso is approximately 670 sq km, making El Paso 40.41% the size of Houston.
Tip: This to-scale comparison of Houston vs. El Paso 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.