| Locality | Post Code |
|---|---|
| Bertram, Burnet | 78605 |
| Briggs, Burnet | 78608 |
| Burnet, Burnet | 78611 |
| Cottonwood Shores, Burnet | 78657 |
| Granite Shills, Burnet | 78654 |
| Granite Shoals, Burnet | 78654 |
| Highland Haven, Burnet | 78654 |
| Joppa, Burnet | 78605 |
| Mahomet, Burnet | 78605 |
| Marble Falls, Burnet | 78654 |
| Meadowlakes, Burnet | 78654 |
| Oakalla, Burnet | 78608 |
| Oatmeal, Burnet | 78605 |
| Tamega, Burnet | 78605 |