Area Code 331: Cities, Coverage, and Telecom Insights
Area Code 331 is an essential part of the telecommunications infrastructure in Chicago's western suburbs. Serving parts of DuPage, Cook, Kane, and Will counties in Illinois, this area code supports a growing population and is vital for both residential and business communications.
What Is Area Code 331?
Area Code 331 is an overlay for the existing 630 area code, introduced to meet the increasing demand for phone numbers in the region. Implemented on October 7, 2007, it ensures that residents and businesses in Chicago's western suburbs continue to have access to necessary telecommunications services.
Geographic Coverage of Area Code 331
Area Code 331 covers a wide range of cities in Chicago's western suburbs. Here are some of the major cities included in this area code:
| City | Latitude | Longitude |
|---|---|---|
| Addison, IL | 41.9317 | -87.98896 |
| North Aurora, IL | 41.80614 | -88.3273 |
| Bartlett, IL | 41.99503 | -88.18563 |
| Batavia, IL | 41.85003 | -88.31257 |
| Bensenville, IL | 41.95503 | -87.94007 |
| Bloomingdale, IL | 41.95753 | -88.0809 |
| Bolingbrook, IL | 41.69864 | -88.0684 |
| Carol Stream, IL | 41.91253 | -88.13479 |
| Darien, IL | 41.75198 | -87.97395 |
| Downers Grove, IL | 41.80892 | -88.01117 |
| Elmhurst, IL | 41.89947 | -87.94034 |
| Glen Ellyn, IL | 41.87753 | -88.06701 |
| Glendale Heights, IL | 41.91031 | -88.07174 |
| Hanover Park, IL | 41.99947 | -88.14507 |
| Lisle, IL | 41.80114 | -88.07479 |
| Lombard, IL | 41.88003 | -88.00784 |
| Naperville, IL | 41.78586 | -88.14729 |
| Roselle, IL | 41.98475 | -88.07979 |
| Saint Charles, IL | 41.91419 | -88.30869 |
| Streamwood, IL | 42.02558 | -88.17841 |
| Villa Park, IL | 41.88975 | -87.98895 |
| West Chicago, IL | 41.88475 | -88.20396 |
| Westmont, IL | 41.79586 | -87.97562 |
| Wheaton, IL | 41.86614 | -88.10701 |
| Woodridge, IL | 41.74697 | -88.05034 |
Telecom Services and Carriers
Area Code 331 is supported by major telecommunications carriers, offering a variety of services:
- AT&T
- Verizon
- T-Mobile
- Sprint
These carriers provide both landline and wireless services, including Voice over Internet Protocol (VoIP) options, to ensure comprehensive coverage and connectivity.
Regulatory Information
Area Code 331 is regulated by the Illinois Commerce Commission (ICC), which oversees telecommunications services within the state. The North American Numbering Plan Administration (NANPA) also plays a critical role in managing numbering resources, ensuring compliance with national guidelines.
- Dialing Requirements: Ten-digit dialing is mandatory.
- Regulatory Body: Illinois Commerce Commission (ICC)
Historical Context
- August 3, 1996: Area code 630 was created from a split of area code 708.
- October 7, 2007: 331 was introduced as an overlay to accommodate the growing need for additional phone numbers.
Conclusion
Area Code 331 is a vital component of the telecommunications framework in Chicago's western suburbs. It supports a diverse range of services and meets the region's growing demand for phone numbers. For more information on area codes and telecommunications regulations, visit the North American Numbering Plan Administration (NANPA).
Explore more about area codes in Illinois by checking out related articles on our site. For specific queries or assistance, contact your local telecom provider.