| Group Name | CHICAGO, IL ORIGIN GROUP |
|---|---|
| Org/Dest Code | O |
| Port(P) Point(O) Code | O |
| Effective | 01MAY1999 |
| Filed | 01MAY1999 |
| Filing Codes | I |
| Cities: | Addison, IL, United States |
| Alsip, IL, United States | |
| Arlington Heights, IL, United States | |
| Aurora, IL, United States | |
| Bartlett, IL, United States | |
| Bensenville, IL, United States | |
| Berkeley, IL, United States | |
| Berwyn, IL, United States | |
| Bloomingdale, IL, United States | |
| Blue Island, IL, United States | |
| Bridgeview, IL, United States | |
| Broadview, IL, United States | |
| Buffalo Grove, IL, United States | |
| Burbank, IL, United States | |
| Calumet, IL, United States | |
| Calumet City, IL, United States | |
| Carpentersville, IL, United States | |
| Chicago, IL, United States | |
| Chicago Heights, IL, United States | |
| Cicero, IL, United States | |
| Clarendon Hills, IL, United States | |
| Des Plaines, IL, United States | |
| Dixmoor, IL, United States | |
| Dolton, IL, United States | |
| Downers Grove, IL, United States | |
| East Chicago, IN, United States | |
| Elgin, IL, United States | |
| Elk Grove Village, IL, United States | |
| Elmhurst, IL, United States | |
| Elmwood Park, IL, United States | |
| Evanston, IL, United States | |
| Evergreen Park, IL, United States | |
| Franklin Park, IL, United States | |
| Flossmoor, IL, United States | |
| Forest Park, IL, United States | |
| Gary, IN, United States | |
| Glencoe, IL, United States | |
| Glendale Heights, IL, United States | |
| Glen Ellyn, IL, United States | |
| Glenview, IL, United States | |
| Hammond, IN, United States | |
| Harwood Heights, IL, United States | |
| Hickory Hills, IL, United States | |
| Highland, IN, United States | |
| Hillside, IL, United States | |
| Hinsdale, IL, United States | |
| Hoffman Estates, IL, United States | |
| Homewood, IL, United States | |
| Harvey, IL, United States | |
| Itasca, IL, United States | |
| La Grange, IL, United States | |
| Lansing, IL, United States | |
| Lincolnwood, IL, United States | |
| Lombard, IL, United States | |
| Lyons, IL, United States | |
| Markham, IL, United States | |
| Maywood, IL, United States | |
| MelRose Park, IL, United States | |
| Midlothian, IL, United States | |
| Morton Grove, IL, United States | |
| Mount Prospect, IL, United States | |
| Munster, IN, United States | |
| Naperville, IL, United States | |
| Niles, IL, United States | |
| Norridge, IL, United States | |
| Northfield, IL, United States | |
| Northlake, IL, United States | |
| Oak Brook, IL, United States | |
| Oak Forest, IL, United States | |
| Oak Lawn, IL, United States | |
| Orland Park, IL, United States | |
| Palatine, IL, United States | |
| Palos, IL, United States | |
| Palos Heights, IL, United States | |
| Palos Hills, IL, United States | |
| Palos Park, IL, United States | |
| Park Forest, IL, United States | |
| Park Ridge, IL, United States | |
| Phoenix, IL, United States | |
| Prospect Heights, IL, United States | |
| River Grove, IL, United States | |
| River Forest, IL, United States | |
| Robbins, IL, United States | |
| Rolling Meadows, IL, United States | |
| Roselle, IL, United States | |
| Rosemont, IL, United States | |
| Schaumburg, IL, United States | |
| Schiller Park, IL, United States | |
| Skokie, IL, United States | |
| South Holland, IL, United States | |
| St Charles, IL, United States | |
| Stone Park, IL, United States | |
| Streamwood, IL, United States | |
| Summit, IL, United States | |
| Tinley Park, IL, United States | |
| Villa Park, IL, United States | |
| Westchester, IL, United States | |
| West Chicago, IL, United States | |
| Western Springs, IL, United States | |
| Westmont, IL, United States | |
| Wheaton, IL, United States | |
| Whiting, IN, United States | |
| Willow Springs, IL, United States | |
| Wilmette, IL, United States | |
| Winnetka, IL, United States | |
| Wood Dale, IL, United States | |
| Woodridge, IL, United States |