779 Rate Centers & Exchanges
12 rate centers · Illinois · Central Time
A rate center is the geographic unit used by phone carriers to determine local calling areas and billing. Each rate center has a specific name and set of NXX exchanges (the 3-digit prefix after the area code) assigned to it. The map below shows the 12 rate centers within area code 779.
Rate Center Locations
12 centers in area code 779All Rate Centers in Area Code 779
| Rate Center |
|---|
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Cissna Park
|
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Coal City
|
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Crystal Lake
|
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De Kalb
|
|
Donovan
|
|
Frankfort
|
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Freeport
|
|
Joliet
|
|
Kankakee
|
|
Momence
|
|
Monroe Center
|
|
Rockford
|