Active Prefixes in Area Code 312
Prefix | Primary City | Phone Type | Company |
---|---|---|---|
312-360-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-361-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-362-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-363-#### | Chicago | Landline Numbers | Rcn Telecom Services... |
312-364-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-365-#### | Chicago | Wireless Numbers | Usa Mobility Wireles... |
312-366-#### | La Grange Park | Wireless Numbers | Usa Mobility Wireles... |
312-367-#### | La Grange Park | Wireless Numbers | Usa Mobility Wireles... |
312-368-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-369-#### | Chicago | Wireless Numbers | New Cingular Wireles... |
312-370-#### | Chicago | Wireless Numbers | Usa Mobility Wireles... |
312-371-#### | Chicago | Wireless Numbers | Sprint Spectrum L.p.... |
312-372-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-373-#### | Chicago | Landline Numbers | Broadwing Communicat... |
312-374-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-375-#### | Chicago | Wireless Numbers | T-mobile Usa, Inc.... |
312-376-#### | Chicago | Landline Numbers | Cbeyond Communicatio... |
312-377-#### | Chicago | Landline Numbers | Xo Illinois, Inc.... |
312-378-#### | Chicago | Wireless Numbers | Usa Mobility Wireles... |
312-379-#### | Chicago | Landline Numbers | Ovation Communicatio... |
312-380-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-381-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-382-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-384-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-385-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-386-#### | Chicago | Landline Numbers | Ameritech Illinois... |
312-387-#### | Chicago | Wireless Numbers | Usa Mobility Wireles... |
312-388-#### | Chicago | Wireless Numbers | United States Cellul... |
312-389-#### | Chicago | Wireless Numbers | Usa Mobility Wireles... |
312-390-#### | Chicago | Landline Numbers | American Messaging (... |
Area Code 312 Introduction
Area Code: | 312 |
Country: | United States |
State/Province: | Illinois - IL |
Major City: | Chicago |
Time Zone: | Central |
Average property | $157K |
Average age | 59 y/o |
Average assets | $89.3K |
Population density | 57,914 sq mi (149,932 km2) |
Population | 12,801,539 |
latitude Longitude: | |
36° 58′ N to 42° 30′ N / 87° 30′ W to 91° 31′ W | |
About 312 : | |
The 312 Area Code (or Area Code 312) is located in the state of MO. Area Code 312 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 1.63 million unique phone numbers and 5.08 million individuals near the city of Saint Louis Area code 312 was put into service. In 1989 Area code 312 was split to form area code 708. In 1996 area code 312 was split again to form area code 773. In 2009 area code 312 was overlaid with area code 872. |
|
Major cities or places | |
Chicago, IL |