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Berkeley, IL Area Codes

Berkeley, Illinois (population 5,141) uses area codes 630 and 331.

Area code630
Area code331
Time zoneCentral
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Berkeley has no telephone exchange of its own in NANPA records; it is served by the Elmhurst exchange about 2.8 km away.

BerkeleyAuroraNapervilleSchaumburgBolingbrookWheatonDowners GroveElmhurstLombardBartlettOswegoCarol StreamStreamwoodBerkeley
Berkeley and nearby cities in area code 630

Carriers with Berkeley numbers

54 prefixes are assigned to the Elmhurst exchange: 26% mobile, 33% VoIP and cable, 41% landline.

CarrierPrefixes
AT&T (Illinois Bell)17
T-Mobile14
Lumen (Level 3)5
Verizon Business (MCImetro)4
AT&T (Teleport)3
Paetec Itel3
Comcast (Xfinity)2
Onvoy (Sinch)1

Area codes used in Berkeley

Area codePrefixes serving BerkeleyMain carriers in this code
63044AT&T (Illinois Bell), AT&T Mobility, T-Mobile
33110Onvoy (Sinch), T-Mobile, Verizon Wireless

Berkeley phone number prefixes

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

Nearby cities in area code 630

Questions

What is the area code for Berkeley, IL?
Berkeley uses 2 area codes: 630 and 331. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
What time zone is Berkeley in?
Berkeley is in the Central time zone.