Austin, Texas is 6.2 times larger than Cary, North Carolina.
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: 150 km2 calculated
Cary is the seventh largest municipality in North Carolina. Cary is in Wake and Chatham counties in the U.S. state of North Carolina. Wikipedia