| Locality | Post Code |
|---|---|
| West Elizabeth, Allegheny | 15088 |
| West Homestead, Allegheny | 15120 |
| West Mifflin, Allegheny | 15122, 15123 |
| West Mifflin Century Mall, Allegheny | 15123 |
| West View, Allegheny | 15229 |
| Wexford, Allegheny | 15090 |
| White Oak, Allegheny | 15131 |
| Wildwood, Allegheny | 15091 |
| Wilkinsburg, Allegheny | 15221 |
| Wilmerding, Allegheny | 15148 |