United States Country Codes

Illinois State Flag

Illinois Area Codes

To call Illinois, dial the following:
Exit Code + 1 + Area Code + The Number

* Do not dial the plus (+) symbols

Illinois Information

The United States country code is 1

The local time in Illinois, United States is (CLICK FOR TIME ZONES)

Get the mobile country codes for Illinois, United States.

Information about Illinois:

Illinois on Wikipedia
The currency of United States is the United States Dollar.
The capital of Illinois is Springfield
Largest Cities in Illinois by population: Chicago, Aurora, Rockford, Joliet, Naperville, Springfield, Peoria, Elgin, Waukegan, Cicero

United States Information:

United States on Wikipedia
The currency of United States is the United States Dollar.
United States is often referred to as US or USA.
The nationality of the United States is American.
The capital of United States is Washington, D.C.
Largest Cities in United States by population: New York, Los Angeles, Chicago, Houston, Philadelphia, Phoenix, San Antonio, San Diego, Dallas, San Jose

United States Emergency Numbers

For an emergency in United States, dial the following numbers:

Medical - 911
Fire - 911
Police - 911

Local Telephone Prefix:

1 is the trunk code for United States

United States Map:

The US country code and Illinois US area code chart below gives you the necessary information for calling American cities. For international dialing codes and detailed dialing instructions to Illinois United States, use our drop down boxes at the top of this page or check out our easy-to-use country code search tool.

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Area Codes 271-300 (of 1286)

Illinois Cities	Illinois Area Codes
Cuba	309
Cullom	815
Cutler	618
Cypress	618
Dahinda	309
Dahlgren	618
Dakota	815
Dale	618
Dallas City	217
Dalton City	217
Dalzell	815
Dana	815
Danforth	815
Danvers	309
Danville	217
Darien	630 or 708
Davis	815
Davis Junction	815
Dawson	217
De Land	217
De Soto	618
Decatur	217
Deer Creek	309
Deer Grove	815
Deerfield	224 or 312 or 630 or 708 or 847
Dekalb	779 or 815
Delavan	217 or 309
Dennison	217
Depue	815
Des Plaines	224 or 630 or 708 or 773 or 847

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Telephone Area Codes For Illinois, United States

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