Round Rock, Texas
Central Time Zone (UTC-6) · TX · —
About Area Codes in Round Rock, Texas
Round Rock, Texas is served by 2 area codes: 512, 737. When multiple area codes serve the same geographic area, it typically indicates overlay codes have been added to accommodate growing demand for phone numbers. All local calls within Round Rock require 10-digit dialing. The city is in the Central time zone (UTC-6).
Other cities in area code 512
Frequently Asked Questions
What area code is Round Rock, Texas?
Round Rock, Texas uses area codes 512 and 737.
What time zone is Round Rock in?
Round Rock is in the Central time zone (UTC-6).
Do I need to dial 10 digits when calling Round Rock?
Yes, all local calls in Round Rock require 10-digit dialing because the area is served by multiple overlay area codes.
When was area code 512 created?
Area code 512 is one of the original 86 area codes established in 1947 as part of the North American Numbering Plan (NANP).
What cities share area code 512 with Round Rock?
Other cities sharing area code 512 with Round Rock include Austin, Buda, Cedar Park, Georgetown, Hutto, among others.
Round Rock, TX · Central Time Zone