Born in Sarasota, FL, Austin was raised by two doctors who never expected their son to become an actor. When asked about his upbringing by Coup De Main in December 2019, Austin said, "The whole idea was a bit preposterous to them. They're doctors, so at the time, they had no idea about any of this stuff. I wanted to do TV and movies when I was fairly young, and they thought it was kind of ridiculous. But my mom was always mostly on my side, whereas my dad took a little more time." Of course, Austin's success has also helped his parents come around to the idea.