Area Code 815 Illinois, USA

WhereCall is here to provide you with the most information on the area code 815, located in Illinois, USA. This area code contains 800 prefixes and is in jeopardy of exceeding the known supply of central office codes during the planning/implementation interval for relief.

NPA Information
Area Code (NPA)815
LocationIllinois, USA
In Jeopardy?Yes
Is Assigned?Yes
Assignment Date01 Jan 1947
In Service?Yes
In Service Date01 Jan 1947
Overlay Complex815/779
Predominant Timezone(s)UTC-06:00
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