| Locality | Post Code |
|---|---|
| Scio, Washtenaw | 48103, 48130 |
| Sharon, Washtenaw | 48158 |
| Sharon Hollow, Washtenaw | 48158 |
| Superior, Washtenaw | 48198 |
| Sylvan, Washtenaw | 48118 |
| Tipton, Washtenaw | 49287 |
| Webster, Washtenaw | 48130 |
| Whitmore Lake, Washtenaw | 48189 |
| Whittaker, Washtenaw | 48190 |
| Willis, Washtenaw | 48191 |
| Willow Run, Washtenaw | 48198 |
| Ypsilanti, Washtenaw | 48197, 48198 |