Oak brook Area Code
We have found 1 cities with names similar to "Oak brook". Below is the list of cities that match your search criteria.
Oak brook, IL area code
Oak brook, IL is served by area code 630. This area code was initially assigned on 09-AUG-94 and has been in continuous service since 03-AUG-96, supporting the city's growing communication needs over the years.
The area code 630 is part of an overlay complex (331/630), which serves the same geographic region. This means that multiple area codes are used in the same area to accommodate the increasing demand for phone numbers.
| City Name | Oak brook, IL |
| Area Code | 630 |
| Overlay Complex | 331/630 |
| State | Illinois |
| Country | United State |
| Time Zone | Central Standard Time (CST) |
| Code Type | General Purpose Code |
| In Service | Yes |
| Assignment Date | 09-AUG-94 |
| In Service Date | 03-AUG-96 |
