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Area Code 331

What is the 331 area code?

State Illinois
Time Zone Central Time

The 331 area code is located in the state of Illinois, and according to Intelius data, covers roughly 59,449 phone numbers. Elgin is the largest city within this area code with a population of about 5,109,292.

Have you received a call from a number with a 331 area code? Figure out who is calling you by performing a reverse phone lookup search. Intelius can provide you with a phone report that includes (when available) original line type and carrier, the number owner’s name, last known address and past addresses, age, possible relatives, and more.

Top cities in the (331) area code

  1. Elgin
    County Cook
    Population 5,109,292
  2. Riverdale
    County DuPage
    Population 920,901
  3. West Chicago
    County Kane
    Population 514,182
  4. Chicago Wabash
    County Kendall
    Population 137,254

331 Stats

Number of Prefixes
215
Number of Cellphones
56,692
Number of Land Lines
2,757

Area Code (331) Prefixes

Prefix
COUNTY
City
CARRIER
TYPE
County Cook
City Elgin
Carrier T-Mobile
Type Wireless, PCS, Cellular
County DuPage
City Riverdale
Carrier Verizon Wireless
Type Wireless, PCS, Cellular
County DuPage
City Elgin
Carrier Terra Nova Telecom
Type Wireless, PCS, Cellular
County Kane
City Elgin
Carrier T-Mobile
Type Wireless, PCS, Cellular
County DuPage
City Riverdale
Carrier Verizon Wireless
Type VoIP
County Kane
City Elgin
Carrier T-Mobile
Type VoIP
County Kane
City West Chicago
Carrier T-Mobile
Type Wireless, PCS, Cellular
County Kendall
City Chicago Wabash
Carrier Peerless Network
Type VoIP
County Kane
City Riverdale
Carrier Verizon Wireless
Type Landline
County DuPage
City Chicago Wabash
Carrier Local Access
Type Landline

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