WEBAustin (/ ˈɔːstɪn / ⓘ AW-stin) [ 7 ] is the capital of the U.S. state of Texas and the seat and most populous city of Travis County, with portions extending into Hays and Williamson counties. Incorporated on December 27, 1839, [ 8 ] it is the 28th-largest metropolitan area in the United States, the 11th-most populous city in the United ...