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 811-840 (of 1286)

Illinois Cities	Illinois Area Codes
Mundelein	224 or 847
Murdock	217
Murphysboro	618
Murrayville	217
Nachusa	815
Naperville	331 or 630
Nashville	618
Nason	618
National Stock Yards	618
Nauvoo	217
Nebo	217
Neoga	217
Neponset	309
New Athens	618
New Baden	618
New Bedford	815
New Berlin	217
New Boston	309
New Burnside	618
New Canton	217
New Douglas	217 or 618
New Haven	618
New Holland	217
New Lenox	815
New Memphis	618
New Salem	217
New Windsor	309
Newark	630 or 779 or 815
Newman	217
Newton	217 or 618

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Telephone Area Codes For Illinois, United States

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