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Find 312 area code details including city, time zone, and map. Lookup area code 312 phone number, name, and location.
Area code 312 is a telephone area code in the North American Numbering Plan for the city of Chicago, including downtown, the Chicago Loop, and its immediate environs. The numbering plan area is completely surrounded by area code 773, which serves the rest of Chicago.
312 Area code map Where is the area code 312 located in Illinois, United States? Area Code 312 coverage is shown in green.
Area code 312 is located in Illinois and includes Chicago. View the 312 area code map, major cities, location, timezone and more on TeraCodes.com.
The 312 Area Code Map above shows the geographic region it covers. It has a single overlay (872) that serves the same geographic area. Combined, this Area Code (and overlays), serves a population of 6,922,760. Area Code 312 has a single Timezone of Central (GMT -06:00). The table above displays the current local time for each time zone.
To find information on a specific area code, use the area code lookup that makes it easy to find an area code by number and gives detailed information including city/state, timezone, and area code maps.
312 is an area code located in the state of Illinois, US. The largest city it serves is Chicago. Location, time zone and map of the 312 area code
Profile and Interactive Map for Area Code 312 in Illinois - October, 2024.
Get information and map of 312 area code, Illinois which shows the counties covered in it. Also get the county list which belongs to area code 312.
Lookup information on Area Code 312 - get demographic, NPA NXX, and other data by area code