512
Covers Austin, Texas
One of the original area codes of 1947
Overlay with 737
City facts
Cedar Park area codes
Area codes for Austin, Texas: history, overlays and how to dial.
512737
Cedar Park uses area codes 512 and 737. Because more than one area code serves the same area, local calls need all ten digits.
About these area codes
737
Covers Austin, Texas
In service since 2013
Overlay with 512
How to call a number in Cedar Park
Inside the US
1 (512) 555-0123Dial 1, the area code, then the seven-digit number.Local call
(512) 555-0123Overlay area: always include the area code.From outside the US
+1 512 555 0123Use your country's exit code or +, then 1 for the US.Cedar Park is on Central Time (CT); check the time before calling from another zone.
Other cities that share these codes
Nearby area codes
| Area code | Used in | Distance |
|---|---|---|
| 254 | Killeen | 41 mi |
| 830 | New Braunfels | 57 mi |
Cedar Park quick facts
Cedar Park was established in 1887 and incorporated on February 24, 1973.
Established1887
Incorporated1973February 24, 1973
CountiesWilliamson and Travis countiesTexas
Area codes512, 737Population77,474Census ACS estimateZIP codes178613Elevation935 ft285 m
Time zoneCentral TimeCT
Dates, namesake and elevation from Wikipedia: Cedar Park, Texas and Wikidata (checked 2026-11-08); population and ZIP codes from the U.S. Census Bureau.
Questions
What area code is Cedar Park?
Cedar Park uses area codes 512 and 737. Because more than one area code serves the same area, local calls need all ten digits.
When did area code 512 start?
Area code 512 is one of the original North American area codes of 1947.
When did area code 737 start?
Area code 737 dates from 2013.
Do I need to dial the area code for local calls in Cedar Park?
Yes. 512 and 737 share the same area as an overlay, so every local call needs the area code plus the seven-digit number (ten digits).
What time zone is area code 512 in?
Cedar Park is on Central Time (CT).
What other cities use area code 512?
Other cities in this network that share 512 and 737 include Georgetown, Austin.
Sources: Area codes 512 and 737, Area codes 512 and 737 (Wikipedia) and Wikidata, checked 2026-11-08. Numbering plans change; the North American Numbering Plan Administrator is the official record.