| General Information about Area Code 618 | |
|---|---|
| Country | United States |
| State / Province / Territory | Illinois |
| Major City | Belleville |
| Time Zone | Central (UTC-06:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 618-512 | Granite City | Madison | Landline |
| 618-362 | Gillespie | Macoupin | Landline |
| 618-933 | West Frankfort | Franklin | Landline |
| 618-285 | Rosiclare | Hardin | Landline |
| 618-922 | Johnston City | Williamson | Wireless |
| 618-907 | Walsh | Randolph | Landline |
| 618-996 | Creal Springs | Williamson | Landline |
| 618-786 | Grafton | Jersey | Landline |
| 618-221 | Aviston | Clinton | Landline |
| 618-838 | Dundas | Richland | Wireless |
| 618-791 | Venice | Madison | Wireless |
| 618-560 | Caseyville | Saint Clair | Wireless |
| 618-322 | Centralia | Marion | Wireless |
| 618-736 | Opdyke | Jefferson | Landline |
| 618-258 | Wood River | Madison | Landline |
| 618-888 | Worden | Madison | Landline |
| 618-795 | Caseyville | Saint Clair | Wireless |
| 618-385 | Tamaroa | Perry | Landline |
| 618-308 | Broughton | Hamilton | Wireless |
| 618-304 | Venice | Madison | Wireless |