| Ort | Postleitzahl |
|---|---|
| Den Nordlige Del, Understed | 9900 |
| Den Nordøstlige Del, Understed | 9900 |
| Den Sydlige Del, Understed | 9300, 9900 |
| Gadholt, Understed | 9900 |
| Haldbjerg, Understed | 9900 |
| Skibtved, Understed | 9900 |
| Sulbæk, Understed | 9300, 9900 |
| Understed, Understed | 9300, 9900 |
| Vangen, Understed | 9900 |
| Vrangbæk, Understed | 9900 |