Where is Area Code 312?

Located in the state of Illinois (IL)

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Area Code 312

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Area Code 312 757 RESULTS FOUND
The 312 Area Code is located in the state of Illinois. Area Code 312 is one of the 312 three-digit telephone area codes in the USA. It covers roughly 375,706 unique phone numbers and 8,885,919 individuals near the cities of Chicago-Naperville-Elgin.
State
State:Illinois (IL)
Metro Area
Metro Area:Chicago-Naperville-Elgin
Estimated Population
Est. Population:8,885,919
Nearby Area Codes
Nearby Area Codes:219, 224, 262, 312, 331, 630, 708, 773, 779, 815, 847, 872
Phone Prefixes
Phone Prefixes:757
Phone Numbers
Phone Numbers: 375,706
Phone Number Prefixes In The 312 Area Code
Phone Prefix Location Carrier
312-359-XXXX Chicago Zone 1 USA Mobility Wireless Inc View ResultsMore >
312-747-XXXX Chicago Zone 1 Ameritech Illinois View ResultsMore >
312-356-XXXX Chicago Zone 1 Ameritech Illinois View ResultsMore >
312-264-XXXX Chicago Zone 1 Broadwing Communications LLC - IL View ResultsMore >
312-253-XXXX Chicago Zone 1 Allegiance Telecom of Illinois Inc View ResultsMore >
312-924-XXXX Chicago Zone 1 Paetec Communications Inc - IL View ResultsMore >
312-346-XXXX Chicago Zone 1 Ameritech Illinois View ResultsMore >
312-788-XXXX Chicago Zone 1 New Cingular Wireless PCS LLC - IL View ResultsMore >

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