| Locality | Post Code |
|---|---|
| Austin, Hays | 78737 |
| Buda, Hays | 78610 |
| Driftwood, Hays | 78619 |
| Dripping Springs, Hays | 78620 |
| Hays, Hays | 78610 |
| Henly, Hays | 78620 |
| Kyle, Hays | 78640 |
| Mount Sharp, Hays | 78620 |
| Mountain, Hays | 78610 |
| Mountain City, Hays | 78610 |
| Mustang Ridge, Hays | 78610 |
| Niederwald, Hays | 78640 |
| Pioneer Town, Hays | 78676 |
| San Marcos, Hays | 78666, 78667 |
| Uhland, Hays | 78640 |
| Wimberley, Hays | 78676 |
| Woodcreek, Hays | 78676 |