Ĭomprising a total area of 637.4 square miles (1,651 km 2), Houston is the ninth-most expansive city in the United States (including consolidated city-counties). Houston is the southeast anchor of the greater megaregion known as the Texas Triangle.
Located in Southeast Texas near Galveston Bay and the Gulf of Mexico, it is the seat and largest city of Harris County and the principal city of the Greater Houston metropolitan area, which is the fifth-most populous metropolitan statistical area in the United States and the second-most populous in Texas ( Dallas–Fort Worth is larger). Houston ( / ˈ h juː s t ən/ ( listen) HEW-stən) is the most populous city in Texas, fourth-most populous city in the United States, most populous city in the Southern United States, as well as the sixth-most populous in North America, with a population of 2,304,580 in 2020. George Bush Intercontinental Airport (IAH), William P.