Houston is about 118 times bigger than Cocos (Keeling) Islands.

Cocos (Keeling) Islands is approximately 14 sq km, while Houston is approximately 1,659 sq km, making Houston 11,748% larger than Cocos (Keeling) Islands.
Tip: This to-scale comparison of Cocos (Keeling) Islands vs. Houston uses the Mercator projection, which distorts the size of regions near the poles.