Round Rock, Texas Area Code

Round Rock, TX Area Codes are

512 and 737

Round Rock, TX is currently using two area codes which are area codes 512 and 737. Ten digit dialing (area code + seven digit number) is necessary.

In addition to Round Rock, TX area code information read more about area code 512 and 737 details and Texas area codes.

Round Rock, TX is located in Williamson County and observes the Central Time Zone.
View our Times by Area Code tool.

Texas Area Code Map