| Localité | Code postal |
|---|---|
| Belgium, Ozaukee | 53004 |
| Cedarburg, Ozaukee | 53012 |
| Fredonia, Ozaukee | 53021 |
| Grafton, Ozaukee | 53024 |
| Mequon, Ozaukee | 53092, 53097 |
| Port Washington, Ozaukee | 53074 |
| Saukville, Ozaukee | 53080 |
| Thiensville, Ozaukee | 53092 |
| Waubeka, Ozaukee | 53021 |