Area Code 618 at a Glance

Area code618
RegionIllinois
CountryUnited States
Primary timezoneAmerica/Chicago
Dialing format+1 (618) NXX-XXXX

Cities and Places Using Area Code 618

Based on prefix-level carrier data, area code 618 covers places including:

  • Belleville, IL
  • Granite City, IL
  • Edwardsville, IL
  • East St. Louis, IL
  • Carbondale, IL
  • Collinsville, IL
  • Alton, IL
  • Benton, IL
  • Mount Vernon, IL
  • Marion, IL
  • West Frankfort, IL
  • Olney, IL

Frequently Asked Questions

Where is area code 618?

Area code 618 serves Illinois, United States.

Who is calling me from area code 618?

A call from area code 618 most likely originates from Illinois, but caller ID can be spoofed. If an unknown caller asks for personal or payment information, hang up and call the organization back on its official number.

How do I dial a 618 number?

Within North America: dial 1-618 followed by the 7-digit number. From abroad: your international prefix (like 00 or +), then 1 618 and the number.