Active Prefixes in Area Code 331
| Prefix | Primary City | Phone Type | Company |
|---|---|---|---|
| 331-825-#### | Not available. | Landline Numbers | Digital Network Acce... |
| 331-826-#### | Elmhurst | Wireless Numbers | Sprint Spectrum L.p.... |
| 331-888-#### | Warrenville | Landline Numbers | Cygnus Telecommunica... |
| 331-999-#### | Oswego | Landline Numbers | Cygnus Telecommunica... |
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 | |