Houston is about 1,414 times smaller than Democratic Republic of the Congo.

Democratic Republic of the Congo is approximately 2,344,858 sq km, while Houston is approximately 1,659 sq km, making Houston 0.07% the size of Democratic Republic of the Congo.
Tip: This to-scale comparison of Democratic Republic of the Congo vs. Houston uses the Mercator projection, which distorts the size of regions near the poles.
Compare further: Houston vs. Democratic Republic of the Congo