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Joliet, IL Area Codes

Joliet, Illinois (population 152,241) uses area codes 815 and 779.

Area code815
Area code779
Time zoneCentral
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JolietRockfordPlainfieldCrystal LakeDeKalbMcHenryNew LenoxLockportWoodstockBelvidereHomer GlenLoves ParkKankakeeJoliet
Joliet and nearby cities in area code 815

Carriers with Joliet numbers

88 prefixes are assigned to the Joliet exchange: 63% mobile, 11% VoIP and cable, 26% landline.

CarrierPrefixes
AT&T Mobility25
T-Mobile21
AT&T (Illinois Bell)15
Verizon Wireless9
AT&T (Teleport)3
Metropcs3
Lumen (Level 3)3
Verizon Business (MCImetro)2

Area codes used in Joliet

Area codePrefixes serving JolietMain carriers in this code
81562Frontier, AT&T (Illinois Bell), Lumen (Level 3)
77926Onvoy (Sinch), AT&T Mobility, Stratus Networks

Joliet phone number prefixes

Numbers starting with these first six digits were originally assigned to the Joliet exchange.

Nearby cities in area code 815

Questions

What is the area code for Joliet, IL?
Joliet uses 2 area codes: 815 and 779. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
What time zone is Joliet in?
Joliet is in the Central time zone.