Round Rock, Texas Area Code

Round Rock, TX Area Codes are

512 and 737

Round Rock, TX is officially utilizing 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.
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Texas Area Code Map