Cities in area code 512
512 numbers are anchored to 35 rate centers across Texas. Each row shows how many active prefixes the locality holds — a direct measure of its numbering footprint.
Ranked by active prefixes, the code's territory runs through Austin, Georgetown, San Marcos, Bastrop, Leander, Lockhart, Burnet and Taylor, and 26 smaller communities down to single-prefix localities.
Metropolitan coverage: 25 rate centers belong to FCC top-100 metro areas.
Overlap note: 35 localities are shared with other area codes, so a neighbor's number may differ in its first three digits.
Clock-wise the coverage is Central.
A caller's real location can differ: numbers port between carriers and follow their owners when they move. Use the prefix tables to see where a specific number block was issued.
| Locality (rate center) | Active prefixes | Metro area | All codes serving it |
|---|---|---|---|
| Austin | 585 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Georgetown | 29 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| San Marcos | 26 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Bastrop | 19 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Leander | 12 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Lockhart | 11 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Burnet | 8 | — | 512, 737 |
| Taylor | 7 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Kyle | 6 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Rockdale | 6 | — | 512, 737 |
| Lampasas | 6 | — | 512, 737 |
| Buda | 5 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Wimberley | 5 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Elgin | 4 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Smithville | 4 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Jarrell | 4 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Dale/lytton Springs | 4 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Dripping Springs | 4 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Buchanan Dam | 4 | — | 512, 737 |
| Paige | 3 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Bertram | 3 | — | 512, 737 |
| Milano | 3 | — | 512, 737 |
| Liberty Hill | 3 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Lometa | 3 | — | 512, 737 |
| Adamsville | 3 | — | 512, 737 |
| Hutto | 3 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Martindale | 2 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| McDade | 2 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Thorndale Thrall | 2 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Kempner | 2 | — | 512, 737 |
| Fentress | 1 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Briggs | 1 | — | 512, 737 |
| Coupland | 1 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| Granger | 1 | Austin-Round Rock-San Marcos, TX | 512, 737 |
| San Gabriel | 1 | Austin-Round Rock-San Marcos, TX | 512, 737 |
FAQ
What is the biggest city in area code 512?
Austin holds the most active prefixes (585), making it the code's largest numbering locality.
How many places does 512 cover?
35 rate centers in Texas hold active 512 prefixes, from Austin down to communities with a single prefix.
Does a 512 number guarantee the caller lives in one of these places?
No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.