Austin Texas as well as the seat and largest city of Travis County, with portions extending into Hays and Williamson counties. Incorporated on December 27, 1839, it is the 11th-most populous city in the United States, the fourth-most-populous city in Texas, and the second-most-populous state capital city after Phoenix, Arizona .[ It was also the fastest growing large city in the United States in 2015 and 2016 and was the fifth fastest growing city with a population above 50,000 between 2010 and 2019 overall. It is the southernmost state capital in the contiguous United States and is considered a "Beta " global city as categorized by the Globalization and World Cities Research Network.
