| Locality | Post Code |
|---|---|
| Ann Arbor, Washtenaw | 48103, 48104, 48105, 48108, 48109 |
| Barton Hills, Washtenaw | 48105 |
| Bridgewater, Washtenaw | 48115 |
| Chelsea, Washtenaw | 48118 |
| Clinton, Washtenaw | 49236 |
| Delhi, Washtenaw | 48103 |
| Dexter, Washtenaw | 48130 |
| Dixboro, Washtenaw | 48105 |
| Dover, Washtenaw | 48130 |
| Four Mile Lake, Washtenaw | 48130 |
| Freedom, Washtenaw | 48118 |
| Gregory, Washtenaw | 48137 |
| Hamburg, Washtenaw | 48189 |
| Hudson Mills, Washtenaw | 48130 |
| Lima, Washtenaw | 48118 |
| Loch Alpine, Washtenaw | 48103 |
| Lodi, Washtenaw | 48103 |
| Luce, Washtenaw | 48118 |
| Lyndon, Washtenaw | 48118 |
| Manchester, Washtenaw | 48158 |
| Milan, Washtenaw | 48160 |
| Northfield, Washtenaw | 48189 |
| Podunk, Washtenaw | 48158 |
| Rawsonville, Washtenaw | 48197 |
| Salem, Washtenaw | 48175 |
| Saline, Washtenaw | 48176 |