| Locality | Post Code |
|---|---|
| Belle Prairie City, Hamilton | 62828 |
| Broughton, Hamilton | 62817 |
| Crook, Hamilton | 62859 |
| Dahlgren, Hamilton | 62828 |
| Dale, Hamilton | 62817, 62829, 62859 |
| Delafield, Hamilton | 62859 |
| Knight Prairie, Hamilton | 62859 |
| Macedonia, Hamilton | 62860 |
| Mayberry, Hamilton | 62817 |
| McLeansboro, Hamilton | 62859 |
| Piopolis, Hamilton | 62859 |
| South Crouch, Hamilton | 62859 |
| South Twigg, Hamilton | 62817 |
| Thackeray, Hamilton | 62859 |
| Twigg, Hamilton | 62829 |
| Walpole, Hamilton | 62817 |