| Area Code/County               | Count |
|--------------------------------|-------|
| 217  Illinois                  | 9609  |
| 224  Illinois                  | 2929  |
| 309  Illinois                  | 8059  |
| 312  Illinois                  | 10091 |
| 331  Illinois                  | 338   |
| 618  Illinois                  | 9754  |
| 630  Illinois                  | 18844 |
| 708  Illinois                  | 15778 |
| 773  Illinois                  | 19139 |
| 779  Illinois                  | 622   |
| 815  Illinois                  | 14221 |
| 847  Illinois                  | 22298 |
| 872  Illinois                  | 647   |
| Adams Illinois                 | 529   |
| Alexander Illinois             | 19    |
| Bond Illinois                  | 169   |
| Boone Illinois                 | 522   |
| Brown Illinois                 | 20    |
| Bureau Illinois                | 400   |
| Calhoun Illinois               | 46    |
| Carroll Illinois               | 174   |
| Cass Illinois                  | 92    |
| Champaign Illinois             | 2723  |
| Christian Illinois             | 489   |
| Clark Illinois                 | 293   |
| Clay Illinois                  | 75    |
| Clinton Illinois               | 270   |
| Coles Illinois                 | 562   |
| Cook Illinois                  | 62964 |
| Crawford Illinois              | 86    |
| Cumberland Illinois            | 33    |
| De Witt Illinois               | 423   |
| Dekalb Illinois                | 1919  |
| Douglas Illinois               | 149   |
| DuPage Illinois                | 17350 |
| Edgar Illinois                 | 110   |
| Edwards Illinois               | 59    |
| Effingham Illinois             | 255   |
| Fayette Illinois               | 181   |
| Ford Illinois                  | 177   |
| Franklin Illinois              | 441   |
| Fulton Illinois                | 342   |
| Gallatin Illinois              | 37    |
| Greene Illinois                | 34    |
| Grundy Illinois                | 511   |
| Hamilton Illinois              | 55    |
| Hancock Illinois               | 136   |
| Hardin Illinois                | 17    |
| Henderson Illinois             | 45    |
| Henry Illinois                 | 355   |
| Iroquois Illinois              | 285   |
| Jackson Illinois               | 415   |
| Jasper Illinois                | 84    |
| Jefferson Illinois             | 458   |
| Jersey Illinois                | 198   |
| Jo Daviess Illinois            | 260   |
| Johnson Illinois               | 60    |
| Kane Illinois                  | 7033  |
| Kankakee Illinois              | 642   |
| Kendall Illinois               | 1036  |
| Knox Illinois                  | 306   |
| La Salle Illinois              | 1248  |
| Lake Illinois                  | 10364 |
| Lawrence Illinois              | 80    |
| Lee Illinois                   | 376   |
| Livingston Illinois            | 323   |
| Logan Illinois                 | 215   |
| Macon Illinois                 | 1013  |
| Macoupin Illinois              | 305   |
| Madison Illinois               | 3329  |
| Marion Illinois                | 357   |
| Marshall Illinois              | 74    |
| Mason Illinois                 | 67    |
| Massac Illinois                | 302   |
| McDonough Illinois             | 370   |
| McHenry Illinois               | 4728  |
| McLean Illinois                | 1939  |
| Menard Illinois                | 148   |
| Mercer Illinois                | 336   |
| Monroe Illinois                | 502   |
| Montgomery Illinois            | 282   |
| Morgan Illinois                | 821   |
| Moultrie Illinois              | 174   |
| No Zip Code Reported, Illinois | 481   |
| Ogle Illinois                  | 923   |
| Peoria Illinois                | 1547  |
| Perry Illinois                 | 350   |
| Piatt Illinois                 | 157   |
| Pike Illinois                  | 120   |
| Pope Illinois                  | 11    |
| Pulaski Illinois               | 64    |
| Putnam Illinois                | 29    |
| Randolph Illinois              | 714   |
| Richland Illinois              | 110   |
| Rock Island Illinois           | 3231  |
| Saline Illinois                | 190   |
| Sangamon Illinois              | 3911  |
| Schuyler Illinois              | 56    |
| Scott Illinois                 | 35    |
| Shelby Illinois                | 215   |
| St. Clair Illinois             | 2298  |
| Stark Illinois                 | 51    |
| Stephenson Illinois            | 685   |
| Tazewell Illinois              | 2490  |
| Union Illinois                 | 142   |
| Vermilion Illinois             | 805   |
| Wabash Illinois                | 48    |
| Warren Illinois                | 251   |
| Washington Illinois            | 155   |
| Wayne Illinois                 | 249   |
| White Illinois                 | 143   |
| Whiteside Illinois             | 686   |
| Will Illinois                  | 7972  |
| Williamson Illinois            | 833   |
| Winnebago Illinois             | 3520  |
| Woodford Illinois              | 225   |