Austin, Texas is 18 times larger than Tel Aviv.
Area: 933 km2 calculated
Austin is the capital of Texas and the seat of Travis County. Located in Central Texas and the American Southwest, it is the 11th-most populous city in the United States of America and the fourth-most populous city in the state of Texas. Wikipedia
Area: 52 km2 calculated
Tel Aviv is the second most populous city in Israel, and makes up the largest part of the city municipality of Tel Aviv-Yafo, which has a population of 414,600. Wikipedia