Austin is the capital city of the U.S. state of Texas, as well as Travis County's seat and largest city with portions reaching into Hays and Williamson counties. It is the eleventh-most populous city in the United States, Texas' fourth-populous city. The town is the cultural and economic center of the metropolitan statistical area of Austin Round Rock, which had an estimated population of over 2,168,00 as of 2018. Austin is regarded as a major high-tech hub. Every year thousands of graduates from the engineering and computer science programs at Austin University of Texas provide a steady stream of employees that help power the technology and defense industries of Austin.