| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Plainfield, Will | 60544, 60585, 60586 |
| Postal/ZIP Codes in Ritchie, Will | 60481 |
| Postal/ZIP Codes in Rockdale, Will | 60436 |
| Postal/ZIP Codes in Romeoville, Will | 60446 |
| Postal/ZIP Codes in Shorewood, Will | 60404, 60431 |
| Postal/ZIP Codes in Sollitt, Will | 60401 |
| Postal/ZIP Codes in Stateville, Will | 60435 |
| Postal/ZIP Codes in Symerton, Will | 60481 |
| Postal/ZIP Codes in University Park, Will | 60484 |
| Postal/ZIP Codes in Wilmington, Will | 60481 |
| Postal/ZIP Codes in Wilton, Will | 60442 |