Round Rock is a city located in Williamson County, Texas, United States. The population was 99,887 at the 2010 census. Round Rock is the 31st most populous city in the state of Texas and the 4th most populous city in Williamson County. As of 2016, the estimated population was 121,786.[3] It is a principal city within Greater Austin metropolitan area.
There are many things to do in Round Rock today. For example, you could visit one of the city's many parks or go hiking on one of the trails. Or, if you're looking for something more cultural, you could visit the Round Rock Heritage Center or take a tour of Dell Technologies headquarters. And if you're feeling adventurous, you could even try your hand at rock climbing at Inner Space Caverns! Whatever your interests may be, there's sure to be something for everyone in Round Rock today.