Austin is the capital of the U.S. state of Texas and the seat of Travis County. Located in Central Texas on the eastern edge of the American Southwest,[7] it is the fourth-largest city in Texas and the 15th-largest in the United States. It was the third-fastest-growing large city in the nation from 2000 to 2006.[8] According to the 2009 U.S. Census estimate, Austin had a population of 757,688.[4] The city is the cultural and economic center of the Austin–Round Rock–San Marcos metropolitan area, with a population of 1.7 million as of the July 2008 U.S. Census estimate, making it the 36th-largest metropolitan area in the United States.

The area was settled in the 1830s on the banks of the Colorado River by pioneers who named the village Waterloo.[9] In 1839, Waterloo was chosen to become the capital of the newly independent Republic of Texas. The city was renamed after Stephen F. Austin, known as the father of