| Code postal | Localité |
|---|---|
| 3800 | Aalst |
| 3800 | Brustem |
| 3803 | Duras |
| 3800 | Engelmanshoven |
| 3800 | Gelinden |
| 3803 | Gorsem |
| 3800 | Groot-Gelmen |
| 3800 | Halmaal |
| 3800 | Kerkom-bij-Sint-Truiden |
| 3850 | Kozen |
| 3800 | Ordingen |
| 3803 | Runkelen |
| 3800 | Sint-Truiden |
| 3806 | Velm |
| 3803 | Wilderen |
| 3800 | Zepperen |