Area Code 312 in Illinois - IL

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.

State: Illinois - IL
Major City: Chicago
Land area: 57,914 sq mi (149,932 km2)
Illinois - IL, The average home value is $157K.
Illinois - IL, The average resident's age is 59 y/o.
Illinois - IL, Income average is $89.3K.
State Population in Area Code 201: 12,801,539.
Latitude: 36° 58′ N to 42° 30′ N Longitude: 87° 30′ W to 91° 31′ W
Time zone in Area Code 201: Central 04:32:31.
Major Cities in Area Code 312: Chicago, IL
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