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The 331 area code is located in Illinois near ELGIN. According to Intelius data, this area code covers roughly 59,449 phone numbers, including 56,692 mobile numbers and 2,757 landline numbers.
Have you received a call from a number with a 331 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 | (331) 200-XXXX |
|---|---|
| Wire Center (WC) | Elgin |
| Zone | Bartlett |
| Primary Carrier/Company | T-Mobile |
| Operating Company Numbers (OCN) | 508J 224C 984E 6115 063E 6529 |
| Line Types (LTYPE) | Wireless, PCS, Cellular VoIP Landline |
| 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 | 60103, 60107, 60133 |
| NXX Prefix | (331) 201-XXXX |
|---|---|
| Wire Center (WC) | Riverdale |
| Zone | Downers Grove |
| Primary Carrier/Company | Verizon Wireless |
| Operating Company Numbers (OCN) | 6333 984E 6534 |
| Line Types (LTYPE) | Wireless, PCS, Cellular VoIP |
| Country | US |
| State | IL |
| County | DuPage |
| Area Code Population | 920,901 |
| Land Area | 327.727 square miles |
| FIPS Code | 17043 |
| Time Zone | Central Time |
| ZIP Codes | 60515, 60516, 60517, 60532 |
| NXX Prefix | (331) 206-XXXX |
|---|---|
| Wire Center (WC) | West Chicago |
| Zone | Aurora |
| Primary Carrier/Company | T-Mobile |
| Operating Company Numbers (OCN) | 6534 6529 |
| Line Types (LTYPE) | Wireless, PCS, Cellular |
| Country | US |
| State | IL |
| County | Kane |
| Area Code Population | 514,182 |
| Land Area | 519.359 square miles |
| FIPS Code | 17089 |
| Time Zone | Central Time |
| ZIP Codes | 60502, 60503, 60504, 60505 |
| NXX Prefix | (331) 207-XXXX |
|---|---|
| Wire Center (WC) | Chicago Wabash |
| Zone | Yorkville |
| Primary Carrier/Company | Peerless Network |
| Operating Company Numbers (OCN) | 6115 318J 508J 984E 063E 224C |
| Line Types (LTYPE) | VoIP Landline |
| Country | US |
| State | IL |
| County | Kendall |
| Area Code Population | 137,254 |
| Land Area | 320.259 square miles |
| FIPS Code | 17093 |
| Time Zone | Central Time |
| ZIP Codes | 60512, 60536, 60560 |
