| Locality | Post Code |
|---|---|
| Beutenaken, Gulpen-Wittem | 6278 NB, 6278 NA |
| Elkenrade, Gulpen-Wittem | 6289 NB, 6289 NA |
| Epen, Gulpen-Wittem | 6285 |
| Eys, Gulpen-Wittem | 6287 |
| Gulpen, Gulpen-Wittem | 6271 |
| Heijenrath, Gulpen-Wittem | 6276 |
| Ingber, Gulpen-Wittem | 6273 |
| Mechelen, Gulpen-Wittem | 6281 |
| Reijmerstok, Gulpen-Wittem | 6274 |
| Slenaken, Gulpen-Wittem | 6277 |
| Wijlre, Gulpen-Wittem | 6321 |
| Wittem, Gulpen-Wittem | 6286 |