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618 Area Code: Location, Time Zone & Phone Lookup

(618)
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What Does Area Code 618 Mean?

Area code 618 is located in southern Illinois and covers Belleville, Granite City, and O'Fallon. It is the only area code that serves the area.

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618 is an area code in Illinois. It serves Southern Illinois, including the Metro-East area.618 was one of the original area codes in Illinois when they were created in 1947. It originally served the entire southern half of the state. In 1997, most of 618 was split off to form the 314 area code. The remaining 618 territory was reduced to its current size.

Today, 618 serves the Metro-East area, including the cities of Belleville, Edwardsville, and Alton. It also serves parts of the St. Louis metropolitan area.

618 is a well-served area code, with several providers offering landline, mobile, and broadband service. It is also one of the most heavily overlaid area codes in the country, with six other area codes sharing its territory.

Area code 618 is located in the Central time zone. This time zone is in the middle of the country, and it covers most of Illinois. The time zone is five hours behind Coordinated Universal Time (UTC) and is two hours behind the Eastern time zone.

Phone Number Prefixes In The 618 Area Code