Texas Gazetteer
The 512 area code is used by SOME cities and towns in these Counties:
| Bastrop County | Cities & Towns | ZIP Codes | Features |
| Burnet County | Cities & Towns | ZIP Codes | Features |
| Caldwell County | Cities & Towns | ZIP Codes | Features |
| Fayette County | Cities & Towns | ZIP Codes | Features |
| Gonzales County | Cities & Towns | ZIP Codes | Features |
| Guadalupe County | Cities & Towns | ZIP Codes | Features |
| Hays County | Cities & Towns | ZIP Codes | Features |
| Lampasas County | Cities & Towns | ZIP Codes | Features |
| Llano County | Cities & Towns | ZIP Codes | Features |
| Milam County | Cities & Towns | ZIP Codes | Features |
| Travis County | Cities & Towns | ZIP Codes | Features |
| Williamson County | Cities & Towns | ZIP Codes | Features |
