Newark is about 27 times smaller than Houston.

Houston is approximately 1,659 sq km, while Newark (map shows its 20 named neighbourhoods; the area covers the whole city) is approximately 63 sq km, making Newark 3.77% the size of Houston.
Tip: This to-scale comparison of Houston vs. Newark 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.