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The 312 area code is located in Illinois near ELGIN. According to Intelius data, this area code covers roughly 1,261,728 phone numbers, including 872,867 mobile numbers and 388,861 landline numbers.
Have you received a call from a number with a 312 area code? Figure out who is calling you by performing a reverse phone lookup search. Intelius can provide you with a phone report that includes (when available) original line type and carrier, the number owner’s name, last known address and past addresses, age, possible relatives, and more.
| NXX Prefix | (312) 200-XXXX |
|---|---|
| Wire Center (WC) | Elgin |
| Zone | Chicago Zone 01 |
| Primary Carrier/Company | T-Mobile |
| Operating Company Numbers (OCN) | 5562 |
| Line Types (LTYPE) | Wireless, PCS, Cellular |
| Country | US |
| State | IL |
| County | Cook |
| Area Code Population | 5,109,292 |
| Land Area | 944.935 square miles |
| FIPS Code | 17031 |
| Time Zone | Central Time |
| ZIP Codes | 60601, 60602, 60603, 60604 |
