austin texas  is in what county
Austin (/ËÉstáµ»n, ËÉË-/) is the capital of the U.S. state of Texas and the seat of Travis County. Austin is the 11th-most populated city in the U.S and the 4th-most populated city in Texas. It is the fastest growing of the 50 largest US cities and the second largest capital city after Phoenix, Arizona. As of June 1, 2016, Austin had a population of 931,830 (U.S. Census Bureau estimate).