Downtown HoustonHouston is the fourth-largest city in the United States of America and the largest city within the state of Texas. As of the 2006 U.S. Census estimate, the city has a population of 2.2 million within an area of 600 square miles (1,600 km²). Houston is the seat of Harris County and the economic center of the Houston–Sugar Land–Baytown metropolitan area, the sixth-largest metropolitan area in the U.S. with a population of 5.6 million.
Houston's economy has a broad industrial base in the energy, manufacturing, aeronautics, transportation, and health care sectors; only New York City is home to more Fortune 500 headquarters in the city limits. Commercially, Houston is ranked as a gamma world city, and the area is a leading center for building oilfield equipment. The emphasis on international trade is expanding every year, and will be a prominent theme in the city’s continued economic development. The Port of Houston ranks first in the United States in international waterborne tonnage handled and second in total cargo tonnage handled. The city has a multicultural population with a large and growing international community. Centrally located between the two coasts, Houston features three airports servicing more than two dozen airlines and offering nonstop service to 152 cities around the world. With hundreds of flights per day, getting there is easy!