Area code 618
Area code 618 serves East St. Louis and nearby parts of Illinois, including Belleville, Alton and Carbondale. It is on Central Time, which observes daylight saving time. 730 is an overlay for the same area.
Area code 618 at a glance
| State | Illinois (IL) |
| Main city | East St. Louis |
| Time zone | Central Time |
| UTC offset | UTC−6 in winter, UTC−5 in summer |
| Daylight saving time | Yes |
| Overlay codes | 730 |
Cities in 618
- Belleville
- Alton
- Carbondale
- Edwardsville
An area code shows where a number was first assigned. Mobile numbers keep their area code when people move, so the person you’re calling may be somewhere else.
When you can call a 618 number
Federal telemarketing rules under the TCPA allow sales calls between 8 AM and 9 PM in the called person’s local time. Here is that window for a 618 number, shown in your own time zone.
General information, not legal advice. Some states add rules for Sundays, holidays or the number of calls. See our calling hours guide.
| If you’re on | You can call 618 between |
|---|---|
| Eastern | 9:00 AM to 10:00 PM |
| Central | 8:00 AM to 9:00 PM |
| Mountain | 7:00 AM to 8:00 PM |
| Arizona | 6:00 AM to 7:00 PM |
| Pacific | 6:00 AM to 7:00 PM |
See the time in 618 without leaving your CRM
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Other area codes in Illinois
Questions about 618
What time zone is area code 618?
Area code 618 is on Central Time. It observes daylight saving time.
Where is area code 618?
Area code 618 is in Illinois. Its main city is East St. Louis, and it also covers Belleville, Alton, Carbondale and Edwardsville.
What are the legal hours to call a 618 number?
Under the federal TCPA, sales calls are allowed from 8 AM to 9 PM in the called person’s local time. Personal and informational calls are not limited by these hours.
What area codes overlay 618?
730 covers the same area as 618, so numbers in the same town can have either code.