Area Code 618 — Illinois

Q: What time zone is area code 618?

Area code 618 is in the Central Time zone (Central Time).

Active General Purpose Code Overlay United States

Area code 618 is located in Illinois and operates on Central Time . The largest city served is Granite City .

Coverage Area

Area code 618 — Illinois

Area Code Details

Area Code: 618
State / Province: Illinois (IL)
Country: United States
Time Zone: Central Time Central Time
Local Time Now: —
Status: Active
Code Type: General Purpose Code
In Service Since: January 1, 1947
Assigned: January 1, 1947
Population Served: ~222,104 est.
Overlay Complex: 618/730

Cities Served

Largest City Granite City

Granite City O'Fallon Carbondale Edwardsville Collinsville Marion Centralia Olney Salem Benton Mount Carmel Metropolis Carmi Staunton Millstadt Red Bud Nashville Belleville-Adams Hoyleton Addieville

History & Relationships

New codes split from 618

730 Illinois

Overlay complex — shares geography with

730 Illinois

Rate Centers & Exchanges

28 rate centers identified within area code 618

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Other Area Codes in Illinois

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Nearby Area Codes

Frequently Asked Questions About Area Code 618

What state is area code 618?

Area code 618 is located in Illinois, United States.

Where is area code 618 from?

Area code 618 originates from Illinois. It operates in the Central Time zone.

What time zone is area code 618?

Area code 618 falls within the Central Time zone (Central Time).

What cities are in area code 618?

Area code 618 serves cities including Granite City, O'Fallon, Carbondale, Edwardsville, Collinsville, Marion, Centralia, Olney, and more.

Is a call from area code 618 a scam?

Area code 618 is a legitimate general purpose code area code serving Illinois. Like any area code, individual numbers using 618 can be used for scam calls — always verify the specific number if you receive an unexpected or suspicious call.