Oak Park Facility Zip Codes
| Bellwood | 60104 |
| Bensenville | 60106 |
| Berkely | 60163 |
| Berwyn | 60402 |
| Broadview | 60153 |
| Brookfield | 60513 |
| Cicero | 60650 |
| Elmhurst | 60126 |
| Elmwood Park | 60707 |
| Forest Park | 60130 |
| Franklin Park | 60131 |
| Harwood Heights | 60656 |
| Hillside | 60162 |
| Hinsdale | 60521 |
| La Grange | 60525 |
| Lombard | 60148 |
| Lyons | 60534 |
| Maywood | 60153 |
| Melrose Park | 60160-2 |
| Norridge | 60656 |
| Northlake | 60164 |
| NorthH Riverside | 60546 |
| Oak Park | 60301 - 4 |
| Park Ridge | 60068 |
| River Forest | 60305 |
| River Grove | 60171 |
| Riverside | 60546 |
| Schiller Park | 60176 |
| Villa Park | 60181 |
| Westchester | 60154 |
| Westmont | 60559 |
| Western Springs | 60558 |