Area Code 730 — Illinois

Active General Purpose Code Overlay United States

Area code 730 is located in Illinois and operates on Central Time . The largest city served is O'Fallon .

Area Code Details

Area Code: 730
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: July 7, 2023
Assigned: April 21, 2005
Population Served: ~80,966 est.
Overlay Complex: 618/730

Cities Served

Largest City O'Fallon

O'Fallon Carbondale Herrin Centralia Kaskaskia Rice Belleville-Adams

History & Relationships

Split from

Overlay complex — shares geography with

Rate Centers & Exchanges

7 rate centers identified within area code 730

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Other Area Codes in Illinois

Nearby Area Codes

Frequently Asked Questions About Area Code 730

What state is area code 730?

Area code 730 is located in Illinois, United States.

Where is area code 730 from?

Area code 730 originates from Illinois. It operates in the Central Time zone.

What time zone is area code 730?

Area code 730 falls within the Central Time zone (Central Time).

What cities are in area code 730?

Area code 730 serves cities including O'Fallon, Carbondale, Herrin, Centralia, Kaskaskia, Rice, Belleville-Adams.

Is a call from area code 730 a scam?

Area code 730 is a legitimate general purpose code area code serving Illinois. Like any area code, individual numbers using 730 can be used for scam calls — always verify the specific number if you receive an unexpected or suspicious call.