Puerto Rico is about 5 times bigger than Houston.

Houston is approximately 1,659 sq km, while Puerto Rico is approximately 9,104 sq km, making Puerto Rico 449% larger than Houston.
Tip: This to-scale comparison of Houston vs. Puerto Rico 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.