Area code 512 serves central Texas, including Austin, the state capital, as well as San Marcos and parts of Round Rock. One of the original area codes from 1947, it has been overlaid with 737 since 2013 due to population and tech industry growth. Austin is known for its music scene, booming tech sector, and political influence. Ten-digit dialing is required. Area code 512 has become synonymous with Austin’s identity, symbolizing creativity, innovation, and the “Keep Austin Weird” ethos. It remains one of the most iconic area codes in the state of Texas.