Active Prefixes in Area Code 331
| Prefix | Primary City | Phone Type | Company |
|---|---|---|---|
| 331-301-#### | Aurora | Landline Numbers | Local Access Llc... |
| 331-302-#### | Aurora | Wireless Numbers | Cellco Partnership D... |
| 331-303-#### | Elburn | Landline Numbers | Cibolo Creek Venture... |
| 331-330-#### | Oswego | Landline Numbers | Denali Spectrum Lice... |
| 331-332-#### | Naperville | Landline Numbers | Denali Spectrum Lice... |
| 331-333-#### | Naperville | Landline Numbers | Denali Spectrum Lice... |
| 331-422-#### | Saint Charles | Landline Numbers | Level 3 Communicatio... |
| 331-425-#### | Aurora | Wireless Numbers | T-mobile Usa, Inc.... |
| 331-431-#### | Aurora | Landline Numbers | Bandwidth.com Clec, ... |
| 331-442-#### | Saint Charles | Wireless Numbers | Cellco Partnership D... |
| 331-444-#### | Naperville | Landline Numbers | Cygnus Telecommunica... |
| 331-452-#### | Aurora | Wireless Numbers | Cellco Partnership D... |
| 331-454-#### | Aurora | Landline Numbers | Denali Spectrum Lice... |
| 331-456-#### | Roselle | Landline Numbers | Globalcom, Inc.-il... |
| 331-457-#### | Naperville | Wireless Numbers | Cellco Partnership D... |
| 331-462-#### | Lombard | Landline Numbers | Xo Illinois, Inc.... |
| 331-465-#### | West Chicago | Wireless Numbers | New Cingular Wireles... |
| 331-472-#### | Naperville | Wireless Numbers | T-mobile Usa, Inc.... |
| 331-481-#### | Downers Grove | Wireless Numbers | Cellco Partnership D... |
| 331-551-#### | Lombard | Landline Numbers | Denali Spectrum Lice... |
| 331-575-#### | Aurora | Wireless Numbers | Sprint Spectrum L.p.... |
| 331-588-#### | Saint Charles | Wireless Numbers | New Cingular Wireles... |
| 331-625-#### | Downers Grove | Wireless Numbers | Cellco Partnership D... |
| 331-642-#### | Elmhurst | Landline Numbers | Bandwidth.com Clec, ... |
| 331-643-#### | Aurora | Wireless Numbers | Sprint Spectrum L.p.... |
| 331-645-#### | Elmhurst | Wireless Numbers | Sprint Spectrum L.p.... |
| 331-684-#### | Aurora | Landline Numbers | Sigecom, Llc - Il... |
| 331-725-#### | Oswego | Wireless Numbers | New Cingular Wireles... |
| 331-777-#### | Downers Grove | Landline Numbers | Cygnus Telecommunica... |
| 331-803-#### | Lemont | Landline Numbers | Peerless Network Of ... |
Area Code 331 Introduction
| Area Code: | 331 |
| Country: | United States |
| State/Province: | Illinois - IL |
| Major City: | Elmhurst |
| Time Zone: | Central |
| Average property | $325K |
| Average age | 53 y/o |
| Average assets | $178K |
| Population density | 57,914 sq mi (149,932 km2) |
| Population | 12,801,539 |
| latitude Longitude: | |
| 36° 58′ N to 42° 30′ N / 87° 30′ W to 91° 31′ W | |
| About 331 : | |
| The 331 Area Code (or Area Code 331) is located in the state of IL. Area Code 331 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 23.3 thousand unique phone numbers and 77.5 thousand individuals near the city of Hanover Park Area code 331 was put into service. Area code 331 is an overlay of area code 630. |
|
| Major cities or places | |
| Aurora, IL>Bartlett, IL>Batavia, IL>Bensenville, IL>Bloomingdale, IL>Bolingbrook, IL>Carol Stream, IL>Darien, IL>Downers Grove, IL>Elmhurst, IL>Glen Ellyn, IL>Glendale Heights, IL>Hanover Park, IL>Lisle, IL>Lombard, IL>Naperville, IL>Roselle, IL>St. Charles, IL>Streamwood, IL>Villa Park, IL>West Chicago, IL>Westmont, IL>Wheaton, IL>Woodridge, IL | |