Lista de ddi de cidades de Illinois – Estados Unidos
| CIDADE | CÓDIGO DDI |
| Addison | 1 630 |
| Algonquin | 1 847 |
| Alsip | 1 708 |
| Alton | 1 618 |
| Antioch | 1 847 |
| Arlington | 1 815 |
| Arlington Heights | 1 847 |
| Aurora | 1 630 |
| Avon | 1 309 |
| Barrington | 1 847 |
| Bartlett | 1 630 |
| Batavia | 1 630 |
| Belleville | 1 618 |
| Bellevue | 1 309 |
| Bellflower | 1 309 |
| Bellwood | 1 708 |
| Belvidere | 1 815 |
| Bensenville | 1 630 |
| Benton | 1 618 |
| Berwick | 1 309 |
| Berwyn | 1 708 |
| Bethalto | 1 618 |
| Bethany | 1 217 |
| Blackhawk Heights | 1 630 |
| Bloomingdale | 1 847 |
| Bloomington | 1 309 |
| Blue Island | 1 708 |
| Bolingbrook | 1 630 |
| Bourbonnais | 1 815 |
| Bradford | 1 309 |
| Bridgeport | 1 618 |
| Bridgeview | 1 708 |
| Broadview | 1 708 |
| Brookfield | 1 708 |
| Buffalo | 1 217 |
| Buffalo Grove | 1 847 |
| Burbank | 1 708 |
| Cahokia | 1 618 |
| Calumet City | 1 708 |
| Calumet Park | 1 708 |
| Canton | 1 309 |
| Carbondale | 1 618 |
| Carmi | 1 618 |
| Carol Stream | 1 630 |
| Carpentersville | 1 847 |
| Caseyville | 1 618 |
| Centerville (ST Clair) | 1 618 |
| Centerville (White) | 1 618 |
| Centralia | 1 618 |
| Chambersburg | 1 217 |
| Champaign Urbana | 1 217 |
| Charleston | 1 217 |
| Cherry Valley | 1 815 |
| Chester | 1 618 |
| Chesterfield Rockbridge | 1 618 |
| Chicago | 1 312 |
| Chicago Heights | 1 708 |
| Chicago Ridge | 1 708 |
| Chillicothe | 1 309 |
| Cicero | 1 708 |
| Clinton | 1 217 |
| Collinsville | 1 618 |
| Country Club Hills | 1 708 |
| Crest Hill | 1 815 |
| Creston | 1 815 |
| Crestwood | 1 708 |
| Crystal Lake | 1 815 |
| Cuba | 1 309 |
| Danville | 1 217 |
| Darien | 1 630 |
| De Kalb | 1 815 |
| Decatur | 1 217 |
| Deer Park | 1 815 |
| Deerfield | 1 847 |
| Des Plaines | 1 847 |
| Dixon | 1 815 |
| Dolton | 1 708 |
| Douglas | 1 309 |
| Downers Grove | 1 630 |
| Downey | 1 847 |
| Du Page | 1 630 |
| Dundee | 1 847 |
| East Chicago Heights | 1 708 |
| East Moline | 1 309 |
| East Peoria | 1 309 |
| Easton | 1 309 |
| Edwardsville | 1 618 |
| Effingham | 1 217 |
| Elgin | 1 847 |
| Elk Grove | 1 847 |
| Elmhurst | 1 630 |
| Elmwood Park | 1 708 |
| Evanston | 1 847 |
| Evansville | 1 618 |
| Everett | 1 847 |
| Evergreen Park | 1 708 |
| Fairbanks | 1 217 |
| Fairfield | 1 618 |
| Fairhaven | 1 815 |
| Fairview Heights | 1 618 |
| Forest City | 1 309 |
| Forest Park | 1 708 |
| Frankfort | 1 815 |
| Frankfort Heights | 1 618 |
| Franklin | 1 217 |
| Franklin Park | 1 847 |
| Freeport | 1 815 |
| Galesburg | 1 309 |
| Georgetown | 1 217 |
| Glen Ellyn | 1 630 |
| Glencoe | 1 847 |
| Glendale | 1 618 |
| Glendale Heights | 1 630 |
| Glenview | 1 847 |
| Glenwood | 1 708 |
| Godfrey | 1 618 |
| Grandview | 1 217 |
| Granite City | 1 618 |
| Grove City | 1 217 |
| Groveland | 1 309 |
| Gurnee | 1 847 |
| Hampton | 1 309 |
| Hanover | 1 815 |
| Hanover Park | 1 847 |
| Harlem | 1 815 |
| Harrisburg | 1 618 |
| Harrison | 1 815 |
| Harvey | 1 708 |
| Harwood Heights | 1 312 |
| Herrin | 1 618 |
| Hickory Hills | 1 708 |
| Highland | 1 618 |
| Highland Park | 1 847 |
| Highlands | 1 630 |
| Hillsboro | 1 217 |
| Hillsdale | 1 309 |
| Hillside | 1 708 |
| Hinsdale | 1 630 |
| Hoffman Estates | 1 847 |
| Homer | 1 217 |
| Homewood | 1 708 |
| Itasca | 1 630 |
| Jacksonville | 1 217 |
| Joliet | 1 815 |
| Justice | 1 708 |
| Kankakee | 1 815 |
| Kenilworth | 1 847 |
| Kewanee | 1 309 |
| La Grange | 1 708 |
| La Grange Park | 1 708 |
| La Salle | 1 815 |
| Lake Forest | 1 847 |
| Lake Villa | 1 847 |
| Lake Zurich | 1 847 |
| Lansing | 1 708 |
| Lawrence | 1 815 |
| Lawrenceville | 1 618 |
| Lemont | 1 630 |
| Liberty | 1 217 |
| Libertyville | 1 847 |
| Limestone | 1 309 |
| Lincoln | 1 217 |
| Lincolnwood | 1 847 |
| Lisle | 1 630 |
| Lockport | 1 815 |
| Lombard | 1 630 |
| Long Branch | 1 309 |
| Longview | 1 217 |
| Loves Park | 1 815 |
| Lyons (Cook) | 1 708 |
| Lyons (Vermillon) | 1 217 |
| Macomb | 1 309 |
| Macon | 1 217 |
| Mahomet | 1 217 |
| Marietta | 1 309 |
| Marion | 1 618 |
| Markham (Cook) | 1 708 |
| Matteson | 1 708 |
| Mattoon | 1 217 |
| Maywood | 1 708 |
| Mchenry | 1 815 |
| Midlothian | 1 708 |
| Moline | 1 309 |
| Monee | 1 708 |
| Monmouth | 1 309 |
| Morris | 1 815 |
| Morton | 1 309 |
| Morton Grove | 1 847 |
| Mount Carmel | 1 618 |
| Mount Morris | 1 815 |
| Mount Olive | 1 217 |
| Mount Prospect | 1 847 |
| Mount Vernon | 1 618 |
| Mundelein | 1 847 |
| Murphysboro | 1 618 |
| Naperville | 1 630 |
| New Bedford | 1 815 |
| New Berlin | 1 217 |
| New Hanover | 1 618 |
| New Hartford | 1 217 |
| New Lenox | 1 815 |
| New Milford | 1 815 |
| New Philadelphia | 1 309 |
| New Trier | 1 847 |
| New Windsor | 1 309 |
| Newell | 1 217 |
| Niles | 1 847 |
| Normal | 1 309 |
| Norridge | 1 708 |
| North Chicago | 1 847 |
| Northfield | 1 847 |
| Northlake | 1 708 |
| Norwood Park | 1 312 |
| Nunda | 1 815 |
| O Fallon | 1 618 |
| Oak Forest | 1 708 |
| Oak Lawn | 1 708 |
| Oak Park | 1 708 |
| Olney | 1 618 |
| Orland | 1 708 |
| Oswego | 1 630 |
| Ottawa | 1 815 |
| Palatine | 1 847 |
| Palos Heights | 1 708 |
| Palos Hills | 1 708 |
| Paris | 1 217 |
| Park Forest | 1 708 |
| Park Ridge | 1 847 |
| Parkersburg | 1 618 |
| Pekin | 1 309 |
| Peoria | 1 309 |
| Peru | 1 815 |
| Plainfield | 1 815 |
| Pontiac | 1 815 |
| Prospect Heights | 1 847 |
| Quincy | 1 217 |
| Rantoul | 1 217 |
| Richfield | 1 217 |
| Richmond | 1 815 |
| Richton Park | 1 708 |
| River Grove | 1 708 |
| Riverton | 1 217 |
| Riverview | 1 847 |
| Robbins | 1 708 |
| Robinson | 1 618 |
| Rochelle | 1 815 |
| Rochester | 1 217 |
| Rock Falls | 1 815 |
| Rock Island | 1 309 |
| Rockford | 1 815 |
| Rockton | 1 815 |
| Rolling Meadows | 1 847 |
| Rome | 1 309 |
| Roscoe | 1 815 |
| Roselle | 1 847 |
| Roseville | 1 309 |
| Round Lake | 1 847 |
| Round Lake Beach | 1 847 |
| Round Lake Heights | 1 847 |
| Round Lake Park | 1 847 |
| Salem | 1 618 |
| Sauk Village | 1 708 |
| Schaumburg | 1 847 |
| Schiller Park | 1 847 |
| Shiloh | 1 618 |
| Skokie | 1 847 |
| South Holland | 1 708 |
| Spring Valley | 1 815 |
| Springfield | 1 217 |
| St Charles | 1 630 |
| Steger | 1 708 |
| Sterling | 1 815 |
| Stickney | 1 708 |
| Streator | 1 815 |
| Summit | 1 708 |
| Sycamore | 1 815 |
| Taylorville | 1 217 |
| Thornton | 1 708 |
| Tinley Park | 1 708 |
| Troy | 1 618 |
| Warren | 1 815 |
| Warrensburg | 1 217 |
| Warrenville | 1 630 |
| Washington | 1 309 |
| Waterloo | 1 618 |
| Wauconda | 1 847 |
| Waukegan | 1 847 |
| West Chicago | 1 630 |
| West Frankfort | 1 618 |
| Western Springs | 1 708 |
| Westfield | 1 217 |
| Wheaton | 1 630 |
| Wheeling | 1 847 |
| Wilmette | 1 847 |
| Wilmington | 1 815 |
| Winnetka | 1 847 |
| Wood River | 1 618 |
| Woodburn | 1 618 |
| Woodland | 1 815 |
| Woodstock | 1 815 |
| Zion | 1 847 |
