512 Area Code
Austin, Texas
Area code 512 is located in Austin, Texas. It covers Austin, Round Rock, and surrounding areas in the Central time zone (UTC-6). Administered by NANPA.
Where is area code 512?
Area code 512 is located in Austin, Texas. It covers Austin, Round Rock, and surrounding areas in the Central time zone (UTC-6).
Area code 512 is overlaid by area code 737. Both codes serve the same geographic region and require 10-digit dialing for local calls.
Cities Covered by Area Code 512
Area code 512 primarily serves the Austin area of Texas. The exact coverage includes Austin, Round Rock, and Cedar Park, along with surrounding communities and suburbs.
Time Zone
Central Time — UTC-6
Area code 512 operates in the Central Time Zone. When calling 512 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 512
Area code 512 was introduced in 1947 as a geographic area code serving Austin, Texas. As demand for phone numbers grew, overlay code 737 was added to the same region, requiring 10-digit dialing for local calls. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.