815 Area Code Phone Numbers

Where is Area Code 815?

The 815 area code belongs to the state of Illinois. Area code 815 is one of 0 three-digit telephone area codes in the United States. There are about 0 unique phone numbers and 0 individuals near the cities of Rockford,Joliet,DeKalb.

Major City:Rockford
Current Time: 5:12pm

Major Cities in 815 Area Code

  • Rockford
  • Joliet
  • DeKalb
  • Crystal Lake
  • Romeoville
  • Plainfield
  • Kankakee
  • McHenry
Area Code 815 Map
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PrefixUsagePrimary CityCarrierIntroduced