| Locality | Postal Code |
|---|---|
| Big Bend, Waukesha | 53103 |
| Brookfield, Waukesha | 53005, 53045, 53072 |
| Butler, Waukesha | 53007 |
| Chenequa, Waukesha | 53029, 53058 |
| Delafield, Waukesha | 53018 |
| Dousman, Waukesha | 53118 |
| Eagle, Waukesha | 53119 |
| Elm Grove, Waukesha | 53122 |
| Genesee Depot, Waukesha | 53127 |
| Hartland, Waukesha | 53029 |
| Lannon, Waukesha | 53046 |
| Lisbon, Waukesha | 53089 |
| Menomonee Falls, Waukesha | 53051, 53052 |
| Merton, Waukesha | 53056 |
| Mukwonago, Waukesha | 53149 |
| Muskego, Waukesha | 53150 |
| Nashotah, Waukesha | 53058 |
| New Berlin, Waukesha | 53146, 53151 |
| North Lake, Waukesha | 53064 |
| North Prairie, Waukesha | 53153 |
| Oconomowoc, Waukesha | 53066 |
| Okauchee, Waukesha | 53069 |
| Pewaukee, Waukesha | 53072 |
| Summit, Waukesha | 53066 |
| Sussex, Waukesha | 53089 |
| Vernon, Waukesha | 53186, 53188 |