| Place | Post Code |
|---|---|
| Wheeny Creek, Hawkesbury | 2758 |
| Wilberforce, Hawkesbury | 2756 |
| Windsor, Hawkesbury | 2756 |
| Windsor Downs, Hawkesbury | 2756 |
| Womerah, Hawkesbury | 2756 |
| Wrights Creek, Hawkesbury | 2775 |
| Yarramundi, Hawkesbury | 2753 |
| All postal codes in Sydney Surrounds | |
|---|---|
| Blue Mountains, Sydney Surrounds | |
| Gosford, Sydney Surrounds | |
| Hawkesbury, Sydney Surrounds | |
| Wollondilly, Sydney Surrounds | |
| Wyong, Sydney Surrounds | |