| Locality | Post Code |
|---|---|
| De Lier, Westland | 2678 |
| Honselersdijk, Westland | 2675 |
| Kwintsheul, Westland | 2295 |
| Maasdijk, Westland | 2676 |
| Monster, Westland | 2681 |
| Naaldwijk, Westland | 2671, 2672, 2673 |
| Poeldijk, Westland | 2685 |
| 's-Gravenzande, Westland | 2691, 2692, 2693, 2694 |
| Ter Heijde, Westland | 2684 |
| Wateringen, Westland | 2291, 2292 |