| Localité | Code postal |
|---|---|
| Plainfield, Will | 60544, 60585, 60586 |
| Ritchie, Will | 60481 |
| Rockdale, Will | 60436 |
| Romeoville, Will | 60446 |
| Shorewood, Will | 60404, 60431 |
| Sollitt, Will | 60401 |
| Stateville, Will | 60435 |
| Symerton, Will | 60481 |
| University Park, Will | 60484 |
| Wilmington, Will | 60481 |
| Wilton, Will | 60442 |