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 - 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.
312 area code — information, time zone, map
1 day ago · 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 - Location, Map, Current Time, Prefixes
Area code 312 is located in Illinois. Get the area’s map, cities covered, current time, prefixes, and dialing instructions.
312 Area Code - Location, Time, Map, Cities and Census Data
Oct 1, 2025 · 312 Area Code located in Illinois, including 16 cities, 3 counties, 1 time zone, map, Census demographics, and 778 active prefixes.
312 Area Code ☎️ Location, Time Zone & Phone Lookup
The 312 Area Code is located in the state of Illinois. Area Code 312 is one of the 269 three-digit telephone area codes in the USA. It covers roughly 7,859,286 unique phone numbers and …
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: Location, prefixes, cities, map, time zone and ...
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.
Where Is The 312 Area Code Located? City Guide | State | Location
Sep 22, 2025 · Accordingly, area code 312 is reserved for residents in Downtown Chicago and all residents in the 312 area code must dial the area code before the number even when making …
Area Code 312
Lookup information on Area Code 312 - get demographic, NPA NXX, and other data by area code