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Where is Area Code 312?
Located in the state of Illinois (IL)
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312
Area Code 312
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:
Illinois (IL)
Metro Area:
Chicago-Naperville-Elgin
Est. Population:
8,885,919
Nearby Area Codes:
219
,
224
,
262
,
312
,
331
,
630
,
708
,
773
,
779
,
815
,
847
,
872
Phone Prefixes:
757
Phone Numbers:
375,706
Phone Number Prefixes In The 312 Area Code
Phone Prefix
Location
Carrier
312-479-XXXX
Chicago Zone 1
T-Mobile USA Inc
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312-927-XXXX
Chicago Zone 1
T-Mobile USA Inc
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312-374-XXXX
Chicago Zone 1
Ameritech Illinois
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312-501-XXXX
La Grange
Cellco Partnership dba Verizon Wireless - IL
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312-328-XXXX
Chicago Zone 1
Ameritech Illinois
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312-218-XXXX
Chicago Zone 1
New Cingular Wireless PCS LLC - IL
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312-225-XXXX
Chicago Zone 1
Ameritech Illinois
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312-488-XXXX
Chicago Zone 1
PG Telecom of Illinois Inc - IL
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