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815 Area Code: Location, Time Zone & Phone Lookup

(815)
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What Does Area Code 815 Mean?

Area code 815 serves northern Illinois except for the Chicago metro area. It includes the cities of Rockford, Joliet, and DeKalb. It has a single overlay (779) that serves the same area.

  • State: Illinois
  • Major City: Rockford
  • Timezone: Central
  • Current Time: 28/08 09:16 AM
Major Cities in 815 Area Code
Rockford Illinois map

Other Cities That Use 815 Area Code

Area Codes Starting with 8

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Phone Number Prefixes In The 815 Area Code