| Locality | Post Code |
|---|---|
| Orland Hills, Cook | 60487 |
| Orland Park, Cook | 60462, 60467 |
| Otto Mall, Cook | 60411 |
| Palatine, Cook | 60038, 60055, 60067, 60074 |
| Palos Heights, Cook | 60463 |
| Palos Hills, Cook | 60465 |
| Palos Park, Cook | 60464 |
| Park Forest, Cook | 60466 |
| Park Ridge, Cook | 60068 |
| Phoenix, Cook | 60426 |
| Pilsen, Cook | 60608 |
| Posen, Cook | 60469 |
| Prospect Heights, Cook | 60070 |
| Ravenswood, Cook | 60625 |
| Richton Park, Cook | 60471 |
| River Forest, Cook | 60305 |
| River Grove, Cook | 60171 |
| Riverdale, Cook | 60827 |
| Riverside, Cook | 60546 |
| Robbins, Cook | 60472 |
| Rogers Park, Cook | 60626, 60660 |
| Rolling Meadows, Cook | 60008 |
| Roseland, Cook | 60628 |
| Rosemont, Cook | 60018 |
| Sauk Village, Cook | 60411 |
| Schaumburg, Cook | 60173, 60193, 60194, 60195, 60196 |