Area code 312 - Wikipedia
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.
Area Code 312 phone numbers - Whitepages
Browse area code 312 phone numbers, prefixes and exchanges. The 312 area code serves Chicago, Willowbrook, Elgin, Arlington Heights, Naperville, covering 23 ZIP codes in 4 counties.
312 Area Code - Map, Phone Lookup, Time Zone - Wirefly
Find 312 area code details including city, time zone, and map. Lookup area code 312 phone number, name, and location.
312 area code — information, time zone, map
Mar 9, 2025 · 312 is an area code located in the state of Illinois, US. The largest city it serves is Chicago. Find out where 312 area code zone from, which states, counties and cities it covers. …
312 Area Code - Reverse Phone Lookup in IL - USPhoneBook
Where is Area Code 312? Area code (312) is in the state of IL. Below, are the major cities in the area code (312).
Area Code 312 - Illinois - Zipdatamaps
List of ZIP Codes in Area Code 312 ... List of Counties in Area Code 312 Cook County
Area Code 312 - Map, time zone, and phone lookup - CallerCenter
About area code 312: location, common spam callers, related area codes, and more. Includes 312 reverse phone lookup to identify spam callers.