| General Information | |
|---|---|
| Country | United States |
| State/Province | Illinois |
| Major City | Belleville |
| Time Zone | Central (UTC-06:00) |
| Current Local Time | 03:36 |
| Prefix | County | Primary City |
|---|---|---|
| 618-200 | Franklin | Benton |
| 618-201 | Jackson | Carbondale |
| 618-202 | Union | Anna |
| 618-203 | Jackson | Carbondale |
| 618-204 | Jefferson | Bonnie |
| 618-205 | Madison | Collinsville |
| 618-206 | Madison | Collinsville |
| 618-207 | Saint Clair | Belleville |
| 618-208 | Madison | Godfrey |
| 618-209 | Saline | Harrisburg |
| 618-210 | Saint Clair | Caseyville |
| 618-212 | Madison | Collinsville |
| 618-213 | Madison | Collinsville |
| 618-214 | Jefferson | Mount Vernon |
| 618-215 | Madison | Collinsville |
| 618-216 | Madison | Collinsville |
| 618-218 | Franklin | Benton |
| 618-219 | Madison | Collinsville |
| 618-220 | Saint Clair | Belleville |
| 618-221 | Clinton | Aviston |
| 618-222 | Saint Clair | Belleville |
| 618-223 | Saint Clair | East Saint Louis |
| 618-224 | Clinton | Trenton |
| 618-225 | Madison | Granite City |
| 618-226 | Clinton | Hoffman |
| 618-227 | Clinton | Carlyle |
| 618-228 | Clinton | Breese |
| 618-229 | Saint Clair | Belleville |
| 618-230 | Saint Clair | Caseyville |
| 618-231 | Marion | Centralia |
| 618-232 | Calhoun | Hamburg |
| 618-233 | Saint Clair | Belleville |
| 618-234 | Saint Clair | Belleville |
| 618-235 | Saint Clair | Belleville |
| 618-236 | Saint Clair | Belleville |
| 618-237 | Marion | Centralia |
| 618-238 | Effingham | Edgewood |
| 618-239 | Saint Clair | Belleville |
| 618-240 | Wabash | Mount Carmel |
| 618-241 | Jefferson | Mount Vernon |
| 618-242 | Jefferson | Mount Vernon |
| 618-243 | Washington | Okawville |
| 618-244 | Jefferson | Mount Vernon |
| 618-245 | Fayette | Farina |
| 618-246 | Jefferson | Mount Vernon |
| 618-247 | Marion | Sandoval |
| 618-248 | Clinton | Albers |
| 618-249 | Jefferson | Woodlawn |
| 618-250 | Madison | Collinsville |
| 618-251 | Madison | Wood River |