Area codes 512 and 737

Counties currently served by these area codes include Bastrop, Burnet, Caldwell, Hays, Travis, Milam and Williamson.

At that time it covered most of the south-central portion of Texas, from the Gulf of Mexico to the Mexican border.

Despite the presence of San Antonio and Austin—the state's third- and fourth-largest cities, respectively, for most of the second half of the 20th century—this configuration remained in place for 45 years.

On February 13, 1999, the 512 area code was reduced to its current size when the southern portion (including Corpus Christi) became 361.

[2] Area codes 512 and 737 serve the following municipalities: In January 1995, Selena Quintanilla released "El Chico del Apartamento 512" (The Guy from Apartment 512).

Area code 806 Area code 940 Area codes 682 and 817 Area codes 682 and 817 Area codes 214, 469, 972, and 945 Area codes 214, 469, 945, and 972 Area codes 430 and 903 Area code 575 Area code 915 Area code 432 Area codes 281, 346, 713, and 832 Area codes 281, 713, and 832 Area code 979 Area code 936 Area code 409 Area code 361 Area code 956 Area codes 210 and 726 Area codes 210 and 726 Area code 830 Area code 512 Area code 254 Area code 325 Area code 318 Area code 337 Area code 870 Area code 580
Numbering plan areas and area codes of Texas with numbering plan area 512 highlighted.