The city of Houston, Texas currently has the largest population of any city in the state. As of 2019, the population of Houston was estimated to be over 2.3 million people. This makes it the fourth most populous city in the United States and the largest city in Texas. The Houston metropolitan area is home to over 6.8 million people, making it the fifth most populous metropolitan area in the country. The Greater Houston area is expected to continue to grow in population as more people move to Texas from other parts of the country.