Castle rock Area Code
We have found 2 cities with names similar to "Castle rock". Below is the list of cities that match your search criteria.
Castle rock, CO area code
Castle rock, CO is served by area code 303. This area code was initially assigned on 01-JAN-47 and has been in continuous service since 01-JAN-47, supporting the city's growing communication needs over the years.
The area code 303 is part of an overlay complex (303/720/983), 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 | Castle rock, CO |
| Area Code | 303 |
| Overlay Complex | 303/720/983 |
| State | Colorado |
| Country | United State |
| Time Zone | Mountain Standard Time (MST) |
| Code Type | General Purpose Code |
| In Service | Yes |
| Assignment Date | 01-JAN-47 |
| In Service Date | 01-JAN-47 |
Castle rock, WA area code
Castle rock, WA is served by area code 360. This area code was initially assigned on 21-JAN-94 and has been in continuous service since 15-JAN-95, supporting the city's growing communication needs over the years.
The area code 360 is part of an overlay complex (360/564), 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 | Castle rock, WA |
| Area Code | 360 |
| Overlay Complex | 360/564 |
| State | Washington |
| Country | United State |
| Time Zone | Pacific Standard Time (PST) |
| Code Type | General Purpose Code |
| In Service | Yes |
| Assignment Date | 21-JAN-94 |
| In Service Date | 15-JAN-95 |
