| Locality | Post Code |
|---|---|
| Astin, Robertson | 77859 |
| Bremond, Robertson | 76629 |
| Calvert, Robertson | 77837 |
| Franklin, Robertson | 77856 |
| Hammond, Robertson | 76629 |
| Hearne, Robertson | 77859 |
| Mumford, Robertson | 77867 |
| New Baden, Robertson | 77870 |
| Petteway, Robertson | 76629 |
| Ridge, Robertson | 77856 |
| Tidwell Prairie, Robertson | 76629 |
| Wheelock, Robertson | 77882 |