The largest city in Texas is Houston, which has a population of over 2.3 million people. It is the fourth most populous city in the United States and the most populous city in the state of Texas. Houston is the economic center of the Houston–The Woodlands–Sugar Land metropolitan area, which is the fifth most populous metropolitan statistical area in the United States. It is home to many Fortune 500 companies and is a major hub for energy, manufacturing, aeronautics, and transportation.