Area codes 512 and 737
512 and 737 are North American telephone area codes serving central Texas, currently for telephones in and near Austin. Counties currently served by these area codes are: Bastrop, Burnet, Caldwell, Hays, Travis, Milam and Williamson.
Area code 512 was one of the original area codes established in October 1947. At the time, it covered most of the south-central portion of Texas, from the Gulf of Mexico to the Mexican border. Besides Austin, it included San Antonio, Corpus Christi, Brownsville, Harlingen and McAllen.
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--512 area remained unchanged for 45 years. In 1992, the western part of its territory (including San Antonio and the Rio Grande Valley) was split off as area code 210, making 512 the last of Texas' original four area codes to be split. On February 13, 1999, it was reduced to its current size when the southern portion (including Corpus Christi) was split off into 361.
To stave off exhaustion by the end of 2013. area code 737 was introduced as an overlay of 512 in July 2013. Ten-digit dialing within the 512 territory was phased in beginning December 2012 and made mandatory on June 1, 2013.
Towns and cities served by these area codes
- Buchanan Dam
- Cedar Creek
- Cedar Park
- Del Valle
- Dripping Springs
- Liberty Hill
- Prairie Lea
- Round Rock
- San Marcos
|Texas area codes: 210, 214, 254, 281, 325, 346, 361, 409, 430, 432, 469, 512, 682, 713, 737, 806, 817, 830, 832, 903, 915, 936, 940, 956, 972, 979|
|North: 254, 325|
|West: 325, 830||area code 512/737||East: 254, 979|
|South: 361, 830,|